Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien hanh » dieu hanh
trung cua » truong cua, trung tuan, trung cap
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
dan canh » van canh, dan cach, dan hanh
dan can » dan chan, dan ca, ban can

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 hanh - thanh trung cua ((nhung don) or (hang cong)) ((dan can) or (dan canh)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - thanh trung cua ((nhung don) OR (hang cong)) ((dan can) OR (dan canh)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - thanh trung cua ((nhung don) or (hang cong)) ((dan can) or (dan canh)) ban*.