Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
theo chieu » theo tieu, ho chieu, theo chu
tranh cac » trinh cac, thanh cac, tranh cai
doc hieu » toc thieu, hoc thieu, hoc hien
chung va » chung ta, chung ve, chong va
chung vi » chung cu, chung tu, hung v
quan ha » quan he

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (doc hieu)) xanh - hanh tranh cac truong ((chung va) or (chung vi)) quan ha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doc hieu)) xanh - hanh tranh cac truong ((chung va) OR (chung vi)) quan ha.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doc hieu)) xanh - hanh tranh cac truong ((chung va) or (chung vi)) quan ha*.