Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh trinh » canh tranh, hanh chinh
ve chong » ve cong, ve huong
ve phong » va phong, van phong, mo phong
cong tac » cong ty
tac trai » tam trai, khac trai, rac thai
trai cao » tai cao, thai cao, trai chan

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 xanh) or (chieu sang)) - hanh trinh ((ve chong) or (ve phong)) cong tac trai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - hanh trinh ((ve chong) OR (ve phong)) cong tac trai cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sang)) - hanh trinh ((ve chong) or (ve phong)) cong tac trai cao*.