Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doanh tinh » doan tinh, doanh thanh, nhanh tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
luat hung » luat chung, luat huong, luat thuong
luan hung » luan chung, lan hung, luan ung
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - doanh tinh ((luat hung) or (luan hung)) cong ((tinh toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - doanh tinh ((luat hung) OR (luan hung)) cong ((tinh toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - doanh tinh ((luat hung) or (luan hung)) cong ((tinh toan) or (dan than)) cau*.