Perhaps you should try some spelling variations:
vuong thanh » luong thanh, duong thanh, truong thanh
muong thanh » truong thanh, dong thanh, cong thanh
theo chieu » theo tieu, theo chu, thi chieu
hanh tang » hanh trang, anh tang, hanh mang
ho chieu » hoc thieu, doi chieu, mot chieu
va tuong » va thuong, va thong, xa truong
toan cao » toan ban, toan tap
tang va » trang va, tang van, thang va

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 (ho chieu)) xanh - hanh tang va tuong ((vuong thanh) OR (muong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) xanh - hanh tang va tuong ((vuong thanh) OR (muong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) xanh - hanh tang va tuong ((vuong thanh) OR (muong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) xanh - hanh tang va tuong ((vuong thanh) OR (muong thanh)) toan cao*.