Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo dieu » theo tieu, theo chieu, thuoc dieu
tram van » tam van, trang van, tranh van
tran van » luan van
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban
nam van » nam dan, nam va, pham van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo dieu hanh - hanh ((((tram van) or (tran van))) or (nam van)) nhung cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo dieu hanh - hanh ((((tram van) OR (tran van))) OR (nam van)) nhung cong dan toan tap.
• Adding a wildcard symbol may retrieve word variants: theo dieu hanh - hanh ((((tram van) or (tran van))) or (nam van)) nhung cong dan toan tap*.