Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
cua dung » cua dang, cua dong, qua dung
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 (doi chieu))) or (theo tieu)) xanh - hanh tranh cua dung cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((ho chieu) OR (doi chieu))) OR (theo tieu)) xanh - hanh tranh cua dung cong san van ban.
• Adding a wildcard symbol may retrieve word variants: ((((ho chieu) or (doi chieu))) or (theo tieu)) xanh - hanh tranh cua dung cong san van ban*.