Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
nam danh » nam dinh, nam dan
va triet » va thiet, va trien, ve triet
danh vai » danh sai, danh va, doanh van
vien cac » vien bach, vien dai, vien da
cua viet » ca viet, hoa viet, cua vat
sach ky » sac ky, sach y, sach ty
toc nam » hoc nam, oc nam, goc nam
nang xa » nang x, lang xa, nang ma
ve cac » va cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky nang xa hoi. hieu ((ve cac) or (vien cac)) toc nam danh vai ((va triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang xa hoi. hieu ((ve cac) OR (vien cac)) toc nam danh vai ((va triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang xa hoi. hieu ((ve cac) or (vien cac)) toc nam danh vai ((va triet) or (cua viet))*.