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

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 tinh - thanh tran van ((hang cong) or (thong cong)) ngang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so cuu tinh - thanh tran van ((hang cong) OR (thong cong)) ngang toan cao.
• Adding a wildcard symbol may retrieve word variants: so cuu tinh - thanh tran van ((hang cong) or (thong cong)) ngang toan cao*.