Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
cong than » cong thanh, cong thang, cong thai
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu tinh) or (lieu tinh)) - canh tranh va dung ((cong than) or (cong tan)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (lieu tinh)) - canh tranh va dung ((cong than) OR (cong tan)) phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) or (lieu tinh)) - canh tranh va dung ((cong than) or (cong tan)) phan cau*.