Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, lieu tinh
thien tinh » khien tinh, thien minh, tien tinh
canh tran » canh tranh, hanh trang, banh trang
van nhung » van nhuong, van hung, van phung
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan

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 (thien tinh)) - canh tran ((van nhung) or (va nhung)) cong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (thien tinh)) - canh tran ((van nhung) OR (va nhung)) cong dan phan tu.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) or (thien tinh)) - canh tran ((van nhung) or (va nhung)) cong dan phan tu*.