Perhaps you should try some spelling variations:
cham duoc » pham duc, che duoc, nam duoc
hanh lai » hanh lam, hanh tai, thanh lap
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
tien va » dien va, thien van
va hanh » van hanh, va thanh, va danh
co hoi » co hoc, co loi

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 ky nang co hoi. tien va ((cham duoc) OR (cham soc)) va hanh lai su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang co hoi. tien va ((cham duoc) OR (cham soc)) va hanh lai su triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang co hoi. tien va ((cham duoc) OR (cham soc)) va hanh lai su triet*.