Perhaps you should try some spelling variations:
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » hieu qua
cac dac » cac dan, cac dai, cac bac
van dat » van dao, van dau, dan dat
dat cua » dai cua, day cua, mat cua
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
dac va » duc va, day va, dat va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang xa hoi. ((hieu va) or (lieu va)) cac dac va van dat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. ((hieu va) OR (lieu va)) cac dac va van dat cua tre*.