Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
truc va » thuc va, thuc vat, trung va
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach v nang xa hoi. ((hieu ve) or (hieu va)) cau truc va thanh vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach v nang xa hoi. ((hieu ve) OR (hieu va)) cau truc va thanh vi ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: hoc sach v nang xa hoi. ((hieu ve) or (hieu va)) cau truc va thanh vi ((cua te) or (cua tu))*.