Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
qua hai » qua hoat
hai cuu » hai cua, hai chu, hai cuc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cuu va » cuu van, cuu ve
vi cua » vai cua, di cua

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 xa hoi. hieu qua hai cuu va danh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. hieu qua hai cuu va danh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang xa hoi. hieu qua hai cuu va danh vi cua triet*.