Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoang van » hang va
thanh cac » hanh cac, thanh bac, thanh ca
cong van » cong vang, cong san, song van
tung va » trung va, tuong va, dung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chieu sach)) - thanh tung va nhung ((cong van) or (hoang van)) thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - thanh tung va nhung ((cong van) OR (hoang van)) thanh cac.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - thanh tung va nhung ((cong van) or (hoang van)) thanh cac*.