Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
theo chieu » theo tieu, ho chieu, thi chieu
nhanh lang » nhanh quang, nhanh thang, nhan dang
trinh toan » tinh toan, thanh toan, trinh han
qua trong » quan trong, qua trinh, qua song
theo chu » cho chu, chao chu, theo yeu
toan cau » toan cao, toan ban, toan tap

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) OR (theo chu)) xanh - ((hanh trang) or (nhanh lang)) qua trong cong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) xanh - ((hanh trang) OR (nhanh lang)) qua trong cong trinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo chu)) xanh - ((hanh trang) or (nhanh lang)) qua trong cong trinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo chu)) xanh - ((hanh trang) or (nhanh lang)) qua trong cong trinh toan cau*.