Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
vien nganh » vien thanh
lanh tranh » canh tranh, lan tranh, sach tranh
hanh trinh » canh tranh, hanh chinh
dung cong » dung trong
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 ((thieu xanh) or (vien nganh)) - ((lanh tranh) OR (hanh trinh)) va dung cong san phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (vien nganh)) - ((lanh tranh) OR (hanh trinh)) va dung cong san phan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (vien nganh)) - ((lanh tranh) OR (hanh trinh)) va dung cong san phan lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (vien nganh)) - ((lanh tranh) OR (hanh trinh)) va dung cong san phan lap*.