Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, hoc thieu, doi chieu
anh tang » anh bang, anh dang, anh nang
cong san » cong tac
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (toc thieu)) xanh - ((anh tang) or (hanh trinh)) cua thong cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) xanh - ((anh tang) OR (hanh trinh)) cua thong cong san van ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (toc thieu)) xanh - ((anh tang) or (hanh trinh)) cua thong cong san van ban*.