Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
thong cong » trong cong, tong cong, thong thong
hien hach » thien hach, hien nhanh, hien khanh
hien hanh » dieu hanh
truong va » truong dai, truong cao, truong dao
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 hach) OR (hien hanh)) - thanh truong va thong cong dan chan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien hach) OR (hien hanh)) - thanh truong va thong cong dan chan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hach) OR (hien hanh)) - thanh truong va thong cong dan chan cao*.