Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
hang hang » nang hang, cang thang, hung thang
thanh cau » thanh chau, thanh mau, nhanh cau
hoc hieu » hoc hien, doc hieu, hoc dieu
hang vat » hang va, dang vat, bang vat
vat dung » van dung, va dung, viet dung
cong tan » cong tac, cong san, cong thanh
song van » hoang van, trong van, duong van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc thieu)) manh - hang hang vat dung ((cong tan) OR (song van)) thanh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) OR (hoc thieu)) manh - hang hang vat dung ((cong tan) or (song van)) thanh cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) OR (hoc thieu)) manh - hang hang vat dung ((cong tan) or (song van)) thanh cau*.