Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va trinh » van trinh, va tinh, lap trinh
trinh vi » trinh va, trinh ve, trinh viet
tu cach » tu cac
su sach » so sach, vu sach
va cam » va cham, va cao, va cai
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ky nang x hoi. hieu ((va cam) OR (va cac)) duc va trinh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky nang x hoi. hieu ((va cam) OR (va cac)) duc va trinh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (su sach)) ky nang x hoi. hieu ((va cam) OR (va cac)) duc va trinh vi cua triet*".