Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu lang » chieu sang, hieu lang, chi lang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, phong chong
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

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