Perhaps you should try some spelling variations:
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hien anh » hien hanh, thien anh, dien anh
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cao » chan cho, chat cao, chay 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 - ((thanh trung) or (thanh tung)) va thong cong dan chan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien anh - ((thanh trung) OR (thanh tung)) va thong cong dan chan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien anh - ((thanh trung) or (thanh tung)) va thong cong dan chan cao*.