Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lang thanh » dang thanh, tang thanh, lang thang
dong thanh » truong thanh
hien hanh » dieu hanh
canh tran » canh tranh, hanh trang, banh trang
van nhung » van nhuong, va nhung, van hung
tran van » luan van

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 - canh tran van nhung cong ((lang thanh) or (dong thanh)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - canh tran van nhung cong ((lang thanh) OR (dong thanh)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - canh tran van nhung cong ((lang thanh) or (dong thanh)) cao*.