Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » hanh trinh, hanh trang, lanh tranh
dong thanh » truong thanh
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
cong san » cong tac
toan cao » toan ban, toan tap

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 - ((hanh tranh) or (canh tranh)) cua thong ((dong thanh) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh tranh) OR (canh tranh)) cua thong ((dong thanh) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh tranh) or (canh tranh)) cua thong ((dong thanh) or (cong san)) toan cao*.