Perhaps you should try some spelling variations:
thuat nhung » thuat hung, thuat chung, thuat chuong
hanh trung » thanh trung, hanh trang, manh trung
tuan nhung » quan nhung, tuan hung, tranh nhung
cong thanh » dong thanh, cong trinh, truong thanh
hieu cach » hieu cac, chieu sach, hieu ca
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tan » cong tac, cong san, cong ty

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 cach - hanh trung ((tuan nhung) OR (thuat nhung)) ((cong tan) OR (cong thanh)) van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu cach - hanh trung ((tuan nhung) or (thuat nhung)) ((cong tan) OR (cong thanh)) van ban~".
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - hanh trung ((tuan nhung) or (thuat nhung)) ((cong tan) OR (cong thanh)) van ban*.