Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc anh
van hanh » van thanh, ban hanh, van anh
thi nang » thi cong, ki nang, thi hanh
nang cho » nang chon, ngang cho, nang cao
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
hieu ve » hieu van
cho hoc » co hoc, khoa hoc
hoc cac » hoc cao
cua cau » cua cac, cua chu, cua cay
vi cua » vai cua, di cua

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) OR (hoc cac)) thi nang cho hoc. ((hieu ve) or (hieu va)) cac xuc van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (hoc cac)) thi nang cho hoc. ((hieu ve) OR (hieu va)) cac xuc van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) OR (hoc cac)) thi nang cho hoc. ((hieu ve) or (hieu va)) cac xuc van hanh vi cua cau*".