Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
mot chieu » doi chieu
trinh cua » tinh cua, trinh luat, trinh quan
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cua hang » cua dang, cua nhung, cua cong
van toan » van tuan, van tan, van thanh
bai toan » bai 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 chieu) or (mot chieu)) xanh - hanh trinh cua hang cong ((van toan) or (bai toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (mot chieu)) xanh - hanh trinh cua hang cong ((van toan) OR (bai toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (mot chieu)) xanh - hanh trinh cua hang cong ((van toan) or (bai toan)) cau*.