Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
ban thanh » ban hanh, ban hang
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam luc » cau luc
de cua » le cua, dieu cua
te cua » tue cua, le cua

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 ky nang xa hoi. hieu va ((cam luc) OR (cam xuc)) ban thanh ((de cua) or (te cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang xa hoi. hieu va ((cam luc) OR (cam xuc)) ban thanh ((de cua) OR (te cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang xa hoi. hieu va ((cam luc) OR (cam xuc)) ban thanh ((de cua) or (te cua)) triet".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang xa hoi. hieu va ((cam luc) OR (cam xuc)) ban thanh ((de cua) or (te cua)) triet*.