Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
ve trong » ke trong, te trong, ve tuong
le trong » le trung, ly trong, le tang
cong tac » cong ty
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - hanh trinh ((ve trong) or (le trong)) ((cong san) OR (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - hanh trinh ((ve trong) OR (le trong)) ((cong san) OR (cong tac)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - hanh trinh ((ve trong) or (le trong)) ((cong san) OR (cong tac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh trinh ((ve trong) or (le trong)) ((cong san) OR (cong tac)) toan cao*.