Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
mai hoi » mai khoi, dai hoi, lai hoi
dinh di » dinh du, dinh vi, danh di
va dinh » van dinh, va kinh, va tinh
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
ma hoi » xa hoi, ma hoa, me hoi
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu

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 ((ma hoi) or (mai hoi)). hieu ve cam xuc va dinh di ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang ((ma hoi) OR (mai hoi)). hieu ve cam xuc va dinh di ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang ((ma hoi) or (mai hoi)). hieu ve cam xuc va dinh di ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ((ma hoi) or (mai hoi)). hieu ve cam xuc va dinh di ((cua te) OR (cua tu))*.