Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
su triet » su viet, ve triet
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va hanh » van hanh, va danh, ban hanh
su tien » su kien, su hien, tu tieng
ve dat » de dat, va dat, ve dao
nuoc » quoc, duoc, ngoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang xa hoi. hieu ve dat nuoc ((va hanh) or (va thanh)) va ((su triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu ve dat nuoc ((va hanh) OR (va thanh)) va ((su triet) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu ve dat nuoc ((va hanh) or (va thanh)) va ((su triet) or (su tien))*.