Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh toan » tinh toan, thanh toan, trinh han
trinh quan » tinh quang, trinh luat, trinh han
nhung cong » dung cong, thong cong, hang cong
than phan » thanh phan, toan phan, thanh pham
ho chieu » theo chieu, hoc thieu, doi chieu
tan phan » toan phan, van phan, tai phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - canh ((trinh toan) or (trinh quan)) nhung cong ((tan phan) OR (than phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh ((trinh toan) OR (trinh quan)) nhung cong ((tan phan) OR (than phan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - canh ((trinh toan) or (trinh quan)) nhung cong ((tan phan) OR (than phan)) cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh ((trinh toan) or (trinh quan)) nhung cong ((tan phan) OR (than phan)) cau*.