Perhaps you should try some spelling variations:
vien nganh » vien thanh
lanh tranh » canh tranh, lan tranh, hanh trinh
thien anh » thien danh, tien anh, thien thanh
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
cong san » cong tac
san phan » san pham, van phan, sat phan
phan lap » phan dau
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien anh) or (vien nganh)) - lanh tranh va dung cong san phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (vien nganh)) - lanh tranh va dung cong san phan lap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (vien nganh)) - lanh tranh va dung cong san phan lap*.