Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
cuong tac » cong tac, cuong cac, cuong tap
tuong tac » cong tac, luong tai, tuong lai
quang cao » nang cao, quang nam
chi xanh » chi anh, chi danh, chi hanh
tranh va » tranh van, trang va, trinh va
quan cua » quan luan, ban cua, gian cua
doi chi » doi khi
va hung » va nhung, van hung, va huong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - hanh tranh va hung ((cuong tac) OR (tuong tac)) ((quang cao) or (quan cua))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - hanh tranh va hung ((cuong tac) OR (tuong tac)) ((quang cao) OR (quan cua)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi xanh - hanh tranh va hung ((cuong tac) OR (tuong tac)) ((quang cao) or (quan cua))".
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - hanh tranh va hung ((cuong tac) OR (tuong tac)) ((quang cao) or (quan cua))*.