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