Perhaps you should try some spelling variations:
trinh quang » tinh quang, trinh quan, trinh dung
tranh quang » tran quang, tinh quang, trinh quan
nhung cong » dung cong, thong cong, hang cong
theo hieu » theo chieu, thien hieu, thuc hieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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

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