Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu
cua dang » cua cong, cua ban
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: ((ho chieu) or (((doc hieu) OR (hoc hien)))) xanh - hanh tranh cua dang cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (((doc hieu) OR (hoc hien)))) xanh - hanh tranh cua dang cong tan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (((doc hieu) OR (hoc hien)))) xanh - hanh tranh cua dang cong tan van ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (((doc hieu) OR (hoc hien)))) xanh - hanh tranh cua dang cong tan van ban*.