Perhaps you should try some spelling variations:
chieu chien » thien chien, hieu hien
hieu vien » hieu hien, hieu viec, thieu nien
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cac dac » cac dan, cac dai, cac bac
va hanh » van hanh, va thanh, va danh
dac va » duc va, day va, dat va
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 ky nang x hoi. ((hieu vien) or (chieu chien)) cac dac va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. ((hieu vien) OR (chieu chien)) cac dac va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. ((hieu vien) or (chieu chien)) cac dac va hanh vi cua triet*.