There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.

Qenya 

san(an)

adverb. then, at that time mentioned, at that same time

Qenya [PE22/121; PE22/122; PE23/096; PE23/097; PE23/109; PE23/110] Group: Eldamo. Published by

san(an)de

adverb. to the very degree

A correlative appearing in Demonstrative, Relative, and Correlative Stems (DRC) from 1948 (PE23/111), a combination of ᴹQ. sa “that [anaphoric]” and ᴹQ. -n(de) “degree”.

Qenya [PE23/110; PE23/111] Group: Eldamo. Published by

íqa e·lirune san ni·analassete

when he sang I listened to him

aiqe ni káraza (nila) san ette kára(za) yú

if I were doing this now (I am not), he would be doing it too

qe (ai) e·tule, (san) inye tule yú

if/when he comes, I come too

qe (ai) e·tulle, (san) inye tulle yú

if/when he came, I came too

íqa ette tule, (san) inye tule

when(ever) hé comes, Í come

in

pronoun. that

tana

that

Qenya [Ety/TA; PE23/085; PE23/104; PE23/105; PE23/111] Group: Eldamo. Published by

tane

pronoun. that

Qenya [PE23/085; PE23/087; PE23/102; PE23/103] Group: Eldamo. Published by

Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.