Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
duong xanh » duong manh, duong van, duong sach
mot chieu » doi chieu, ho chieu
trinh van » trinh han, trinh quan, trinh toan
duong anh » duong manh, duong vanh, dong anh
van dung » van dong, xay dung, tin dung
tuan cao » toan cao, juan cao, quang cao
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: ((mot chieu) or (doi chi)) xanh - hanh trinh van dung ((duong anh) OR (duong xanh)) tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chi)) xanh - hanh trinh van dung ((duong anh) OR (duong xanh)) tuan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (doi chi)) xanh - hanh trinh van dung ((duong anh) OR (duong xanh)) tuan cao".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chi)) xanh - hanh trinh van dung ((duong anh) OR (duong xanh)) tuan cao*.