Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
hieu van » hieu va, thien van, lieu va
dua tren » dung tren
su sach » so sach, vu sach
van lam » van nam
lam xuc » cam xuc, lam duoc
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y ((lang van) or (trong cac)) hoi. hieu van lam xuc va hanh vi ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((lang van) OR (trong cac)) hoi. hieu van lam xuc va hanh vi ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: su sach y ((lang van) or (trong cac)) hoi. hieu van lam xuc va hanh vi ((dua tren) or (cuu tre))*.