Perhaps you should try some spelling variations:
tieu trinh » tien thinh, trieu tinh, lieu tinh
tien trinh » tien thinh, bien tinh, tien thanh
hanh dong » ha dong
luan hung » luan chung, lan hung, luan ung
hung cong » nhung cong, hung cuong, phung cong
anh dong » anh huong, anh son
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu trinh) OR (tien trinh)) - ((hanh dong) or (anh dong)) luan hung cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu trinh) OR (tien trinh)) - ((hanh dong) OR (anh dong)) luan hung cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu trinh) OR (tien trinh)) - ((hanh dong) or (anh dong)) luan hung cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu trinh) OR (tien trinh)) - ((hanh dong) or (anh dong)) luan hung cong dan toan ban*.