Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
thanh tung » thanh cong
tung thuat » thuong thuat, trong thuat, vuong thuat
thuat bang » thuat ban, thuat mang, thuat nang
hieu manh » chieu xanh, dieu hanh, hien hanh
bang cong » dang cong, bang song, hang cong
cong tran » cong tan, cong tuan, cong toan
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: doc ((hieu nganh) or (hieu manh)) - thanh tung thuat bang cong tran van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (hieu manh)) - thanh tung thuat bang cong tran van ban*.