Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
tranh chao » tranh chap, trinh chao, tranh cua
chao trong » chat trong, cho trong, cay trong
chau tinh » cuu tinh, ha tinh, cua tinh
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu tinh) or (chau tinh)) - canh tranh chao trong cong tan ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu tinh) OR (chau tinh)) - canh tranh chao trong cong tan ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: doc ((chieu tinh) or (chau tinh)) - canh tranh chao trong cong tan ((phan cau) or (phan tu))*.