Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, mot chieu
ho chieu » theo chieu, hoc thieu, mot chieu
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
cong tap » cuong tap, cong tac, cong tan
tap doan » tap quan
doan tap » toan tap, doan cap, doanh tai

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) or (ho chieu)) xanh - hanh tranh ((cua dung) or (qua dung)) cong tap doan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) xanh - hanh tranh ((cua dung) OR (qua dung)) cong tap doan tap.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) xanh - hanh tranh ((cua dung) or (qua dung)) cong tap doan tap*.