Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
thanh tran » thanh trang, thanh toan, thanh tra
phung cong » nhung cong, phong cong, dung cong
hoc thieu » toc thieu, hoc hien
ho chieu » theo chieu, doi chieu, mot chieu
tran van » luan van
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) sach - thanh tran van ((phung cong) OR (nhung chong)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh tran van ((phung cong) OR (nhung chong)) dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) sach - thanh tran van ((phung cong) OR (nhung chong)) dan than cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - thanh tran van ((phung cong) OR (nhung chong)) dan than cao*.