Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cham duc » pham duc, cham soc, pham duy
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
dao cua » dai cua, dan cua, do cua
day cua » dai 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 ve) or (hieu va)) cham duc va hanh ((dao cua) OR (day cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang xa hoi. ((hieu ve) OR (hieu va)) cham duc va hanh ((dao cua) OR (day cua)) te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang xa hoi. ((hieu ve) or (hieu va)) cham duc va hanh ((dao cua) OR (day cua)) te*".