Perhaps you should try some spelling variations:
dua tren » dung tren
te sach » toc sach
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
lua tre » cua tre, luy tre, luat tri
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va
dan vi » doan vi, dan va, gan vi

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 y nang x ho. hieu ve cac xuc va ((dan vi) or (don vi)) ((lua tre) or (dua tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x ho. hieu ve cac xuc va ((dan vi) OR (don vi)) ((lua tre) OR (dua tren)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang x ho. hieu ve cac xuc va ((dan vi) or (don vi)) ((lua tre) or (dua tren))*.