Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
va lang » hoa lang
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chau tinh) or (lieu tinh)) - canh tranh ((va lang) OR (va nang)) cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chau tinh) OR (lieu tinh)) - canh tranh ((va lang) OR (va nang)) cong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chau tinh) or (lieu tinh)) - canh tranh ((va lang) OR (va nang)) cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chau tinh) or (lieu tinh)) - canh tranh ((va lang) OR (va nang)) cong dan than cau*.