Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, mot chieu
trinh vat » trinh van, trinh luat, sinh vat
ho chieu » theo chieu, hoc thieu, mot chieu
vat dung » van dung, va dung, viet dung
san tan » van tan, san tay, san ten
san van » tan van, luan van, tran van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - hanh trinh vat dung trong ((san tan) OR (san van)) cau~.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) xanh - hanh trinh vat dung trong ((san tan) or (san van)) cau*.