Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trong mach » trong minh, trong anh, trong dich
phan hieu » van hieu, phan kien, gian hieu
trinh cua » tinh cua, trinh luat, trinh quan
nhu dieu » thu dieu, nha dieu, nhi dieu
cua dung » cua dang, cua dong, qua dung
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: ((nhu dieu) or (phan hieu)) lang - hanh trinh cua dung ((trong mach) OR (trong cac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nhu dieu) OR (phan hieu)) lang - hanh trinh cua dung ((trong mach) OR (trong cac)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nhu dieu) or (phan hieu)) lang - hanh trinh cua dung ((trong mach) OR (trong cac)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ((nhu dieu) or (phan hieu)) lang - hanh trinh cua dung ((trong mach) OR (trong cac)) toan cau*.