Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
thong cong » trong cong, tong cong, thong thong
canh manh » lanh manh, canh tranh, cach mang
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
van toan » van tuan, van tan, van thanh
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: ((doc hieu) or (theo chieu)) sang - canh manh cua ((dung cong) or (thong cong)) van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (theo chieu)) sang - canh manh cua ((dung cong) OR (thong cong)) van toan ban.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (theo chieu)) sang - canh manh cua ((dung cong) or (thong cong)) van toan ban*.