Perhaps you should try some spelling variations:
chiet tach » chieu sach
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » canh tranh, hanh chinh
ve phong » va phong, van phong, mo phong
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (chieu sang)) - hanh trinh ((he thong) or (ve phong)) cong tan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (chieu sang)) - hanh trinh ((he thong) OR (ve phong)) cong tan than cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (chieu sang)) - hanh trinh ((he thong) or (ve phong)) cong tan than cao*.