Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
hiem ngan » kim ngan, viem gan
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua khong » cua phuong, cua thuong, cua cong
hua khong » hoa khong, hoac khong, phuc khong
cang dan » cong dan, tang dan, canh dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hiem ngan) or (hieu manh)) - thanh truong ((cua khong) OR (hua khong)) cang dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hiem ngan) OR (hieu manh)) - thanh truong ((cua khong) OR (hua khong)) cang dan chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hiem ngan) or (hieu manh)) - thanh truong ((cua khong) OR (hua khong)) cang dan chan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hiem ngan) or (hieu manh)) - thanh truong ((cua khong) OR (hua khong)) cang dan chan cau*.