Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh qua » tranh cua, thanh qua, trinh qua
qua trong » quan trong, qua trinh, qua song
cong san » cong tac
san toan » van toan, dan toan, manh toan
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: ho ((dieu hanh) or (chieu sang)) - hanh tranh qua trong cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((dieu hanh) OR (chieu sang)) - hanh tranh qua trong cong san toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((dieu hanh) or (chieu sang)) - hanh tranh qua trong cong san toan cao*.