Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
lieu tinh » trieu tinh, diep tinh, bien tinh
doanh cua » doanh luan
thong dan » thong van, tuong dan, thong den
manh cua » ban cua
dan toan » van toan, dan than, manh toan
toan cau » 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) or (lieu tinh)) - canh ((manh cua) OR (doanh cua)) thong thong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (lieu tinh)) - canh ((manh cua) OR (doanh cua)) thong thong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (lieu tinh)) - canh ((manh cua) OR (doanh cua)) thong thong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (lieu tinh)) - canh ((manh cua) OR (doanh cua)) thong thong dan toan cau*.