Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu sang » chu bang, thu sang, chieu sang
qua dung » quang dung, su dung, qua song
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sang - ((hanh tranh) or (canh tranh)) qua dung cong tan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sang - ((hanh tranh) OR (canh tranh)) qua dung cong tan ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo chu sang - ((hanh tranh) or (canh tranh)) qua dung cong tan ((toan cao) or (toan tap))*.