Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
cac giao » cach giao, cac giai, ca giao
danh vai » danh sai, danh va, doanh van
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
giao va » gia va, giai va, gian va
va danh » va dinh, va dan, va hanh

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

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