Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
canh tran » canh tranh, hanh trang, banh trang
van thong » van thuong, van phong, va thong
tran van » luan van
van toan » van tuan, van tan, van thanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (chieu tinh)) - canh tran van thong cong ((van toan) or (van ban)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu tinh)) - canh tran van thong cong ((van toan) OR (van ban)) cao.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu tinh)) - canh tran van thong cong ((van toan) or (van ban)) cao*.