Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
canh doanh » hanh doanh, chinh doanh, kinh doanh
thieu xanh » chieu xanh, hieu manh, thien anh
thong dien » thong dieu, thong tin, thong viet
lieu tinh » trieu tinh, diep tinh, bien tinh
cua thong » cua thuong, cua khong, cua tong
dien than » dien thanh, dien toan, dien phan
than cau » toan cau, phan cau, than cap

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 (lieu tinh)) - ((canh doanh) OR (doanh doanh)) cua thong thong dien than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (lieu tinh)) - ((canh doanh) OR (doanh doanh)) cua thong thong dien than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (lieu tinh)) - ((canh doanh) OR (doanh doanh)) cua thong thong dien than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (lieu tinh)) - ((canh doanh) OR (doanh doanh)) cua thong thong dien than cau*.