Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
nhanh lang » nhanh thang, nhan dang, nhanh dong
qua dung » quang dung, su dung, qua song
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
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: theo chieu xanh - ((nhanh lang) or (nhanh quang)) qua dung ((cong ban) OR (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - ((nhanh lang) OR (nhanh quang)) qua dung ((cong ban) OR (cong tan)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - ((nhanh lang) or (nhanh quang)) qua dung ((cong ban) OR (cong tan)) than cau".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - ((nhanh lang) or (nhanh quang)) qua dung ((cong ban) OR (cong tan)) than cau*.