Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
theo chieu » theo tieu, ho chieu, theo chu
hanh trinh » canh tranh, hanh chinh
phuong dan » phuong danh, phuong doan, huong dan
hoc thieu » toc thieu, hoc hien
mot chieu » doi chieu, ho chieu
trinh vat » trinh van, trinh luat, sinh vat
vat dung » van dung, va dung, viet dung
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((theo chieu) or (hoc thieu))) or (mot chieu)) xanh - hanh trinh vat dung phuong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((theo chieu) OR (hoc thieu))) OR (mot chieu)) xanh - hanh trinh vat dung phuong dan van ban.
• Adding a wildcard symbol may retrieve word variants: ((((theo chieu) or (hoc thieu))) or (mot chieu)) xanh - hanh trinh vat dung phuong dan van ban*.