Perhaps you should try some spelling variations:
doanh nhanh » doanh nhan, doanh thanh, danh thanh
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
danh nhan » doanh nhan, thanh nhan, benh nhan
cong than » cong thanh, cong thang, cong thai
cong tan » cong tac, cong san, cong thanh

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 ((doanh nhanh) or (danh nhan)) duong ((cong than) OR (cong tan)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh ((doanh nhanh) OR (danh nhan)) duong ((cong than) OR (cong tan)) phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh ((doanh nhanh) or (danh nhan)) duong ((cong than) OR (cong tan)) phan tu".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh ((doanh nhanh) or (danh nhan)) duong ((cong than) OR (cong tan)) phan tu*.