Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
nhung tung » nhung tuong, nhung vung, nhung huong
nhung dung » phuong dung, ung dung, thong dung
thi chieu » thi chien, thi hieu, theo chieu
trinh van » trinh han, trinh quan, trinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
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: ((ho chieu) or (thi chieu)) xanh - canh trinh van ((nhung tung) or (nhung dung)) tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (thi chieu)) xanh - canh trinh van ((nhung tung) OR (nhung dung)) tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (thi chieu)) xanh - canh trinh van ((nhung tung) or (nhung dung)) tinh toan cau*.