Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
duong manh » duong van
doi chieu » doc hieu, doi chi, mot chieu
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » theo chieu, hoc thieu, mot chieu
va thong » va thuong, va phuong, va cong
toan ban » van ban

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 chieu)) xanh - hanh tranh ((va thong) or (he thong)) duong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - hanh tranh ((va thong) OR (he thong)) duong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) xanh - hanh tranh ((va thong) or (he thong)) duong manh toan ban*.