Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hua thong » hoa thong, huu thong, huy thong
hua khong » hoa khong, cua khong, hoac khong
tan thanh » tran thanh, tang thanh, toan thanh
thanh lap » thanh san, phan lap, thanh hai
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doi chi)) xanh - hanh tranh ((hua thong) OR (hua khong)) cong tan thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chi)) xanh - hanh tranh ((hua thong) OR (hua khong)) cong tan thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chi)) xanh - hanh tranh ((hua thong) OR (hua khong)) cong tan thanh lap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chi)) xanh - hanh tranh ((hua thong) OR (hua khong)) cong tan thanh lap*.