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
hien hanh » dieu hanh
hien anh » thien anh, dien anh, tien anh
tran van » luan van
van tuan » van quan, van ban, anh tuan
tuan cao » toan cao, juan cao, quang cao

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

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