Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham duc » pham duc, cham soc, pham duy
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu vu » hieu va, hieu ve, dieu vu
hieu su » hieu sau, tieu su, hieu so
va hanh » van hanh, va thanh, va danh
hanh de » hanh ve, hanh kem
de cua » le cua, te cua, dieu 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: su sach ty nang x hoi. ((hieu vu) or (hieu su)) cham duc va hanh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. ((hieu vu) OR (hieu su)) cham duc va hanh de cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang x hoi. ((hieu vu) or (hieu su)) cham duc va hanh de cua triet*.