Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham xuc » chat xuc, cham soc, pham duc
dong cua » dung cua, cong cua, huong cua
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
hoi cua » hoi chuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang xa hoi. hieu va ((cham xuc) OR (cam xuc)) gia thanh ((hoi cua) or (dong cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang xa hoi. hieu va ((cham xuc) OR (cam xuc)) gia thanh ((hoi cua) OR (dong cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang xa hoi. hieu va ((cham xuc) OR (cam xuc)) gia thanh ((hoi cua) or (dong cua)) te".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang xa hoi. hieu va ((cham xuc) OR (cam xuc)) gia thanh ((hoi cua) or (dong cua)) te*.