Perhaps you should try some spelling variations:
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
ca thong » ca thuong, va thong, ca trong
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (doi chieu)) sach - ((anh huong) or (thanh tung)) ca thong cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chieu)) sach - ((anh huong) OR (thanh tung)) ca thong cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doi chieu)) sach - ((anh huong) or (thanh tung)) ca thong cong tan van ban*.