Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
theo chieu » theo tieu, ho chieu, thi chieu
tranh cua » doanh cua, manh cua
cua trong » cua truong, cua trung, qua trong
theo chu » cho chu, chao chu, theo yeu
van toan » van tuan, van tan, van thanh
van tai » von tai, van tuan

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 (theo chu)) xanh - hanh tranh cua trong cong ((van toan) or (van tai)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) xanh - hanh tranh cua trong cong ((van toan) OR (van tai)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo chu)) xanh - hanh tranh cua trong cong ((van toan) or (van tai)) cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo chu)) xanh - hanh tranh cua trong cong ((van toan) or (van tai)) cao*.