Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va tinh » may tinh
va danh » va dinh, va dan, va hanh
qua hai » qua hoat
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
hai cuu » hai cua, hai chu, hai cuc
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 sach) or (su sach)) ky nang x hoi. hieu qua hai cuu ((va danh) or (va tinh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang x hoi. hieu qua hai cuu ((va danh) OR (va tinh)) vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang x hoi. hieu qua hai cuu ((va danh) or (va tinh)) vi cua triet*.