Perhaps you should try some spelling variations:
thien tinh » khien tinh, thien minh, tien tinh
chieu tinh » trieu tinh, lieu tinh, chau tinh
tranh qua » tranh cua, thanh qua, trinh qua
dung cong » dung trong
cong than » cong thanh, cong thang, cong tan
qua dung » quang dung, su dung, qua song
phan lap » phan dau

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

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