Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
ngang toan » nganh toan, dang toan, quang toan
tran van » luan van
toan cao » toan ban, toan tap
so cuu » ho cuu, so cau, so chu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so cuu) OR (so huu)) tinh - thanh tran van ((nhung cong) or (thong cong)) ngang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so cuu) OR (so huu)) tinh - thanh tran van ((nhung cong) OR (thong cong)) ngang toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so cuu) OR (so huu)) tinh - thanh tran van ((nhung cong) or (thong cong)) ngang toan cao".
• Adding a wildcard symbol may retrieve word variants: ((so cuu) OR (so huu)) tinh - thanh tran van ((nhung cong) or (thong cong)) ngang toan cao*.