Perhaps you should try some spelling variations:
dua tren » dung tren
hieu ve » hieu va, hieu van
lua tre » cua tre, luy tre, luat tri
sach ly » sach lo, sach ty, sach hay
cac xuc » cam xuc, cac nuoc, chat xuc
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ly) OR (sach y)) nang x ho. hieu ve cac xuc va dan vi ((lua tre) or (dua tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ly) OR (sach y)) nang x ho. hieu ve cac xuc va dan vi ((lua tre) OR (dua tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ly) OR (sach y)) nang x ho. hieu ve cac xuc va dan vi ((lua tre) or (dua tren))".
• Adding a wildcard symbol may retrieve word variants: te ((sach ly) OR (sach y)) nang x ho. hieu ve cac xuc va dan vi ((lua tre) or (dua tren))*.