Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
canh tinh » manh tinh, nhanh tinh, thanh tinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
va thong » va thuong, va phuong, he thong
cong san » cong tac
san phan » san pham, van phan, sat phan
phan dau » phan tu, hang dau

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 - ((((canh tinh) OR (hanh tinh))) or (canh tranh)) va thong cong san phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((((canh tinh) OR (hanh tinh))) OR (canh tranh)) va thong cong san phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((((canh tinh) OR (hanh tinh))) or (canh tranh)) va thong cong san phan dau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((((canh tinh) OR (hanh tinh))) or (canh tranh)) va thong cong san phan dau*.