Perhaps you should try some spelling variations:
sach dao » lanh dao
truc va » thuc va, thuc vat, trung va
hieu va » lieu va, hieu qua
lua tre » cua tre, luy tre, dua tren
nang xa » nang x, lang xa, nang ma
sach v » sach va, sach y, sach 2
va cam » va cham, va cac, va cao
vi lua » vi luu

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 v) or (sach dao)) nang xa hoi. hieu va cam ((duc va) or (truc va)) hanh vi lua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach v) OR (sach dao)) nang xa hoi. hieu va cam ((duc va) OR (truc va)) hanh vi lua tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach v) or (sach dao)) nang xa hoi. hieu va cam ((duc va) or (truc va)) hanh vi lua tre*.