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

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) OR (dinh vi)) cua te~.
• 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) OR (dinh vi)) cua te.
• 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) OR (dinh vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ((ma hoi) or (mai hoi)). hieu ve cam xuc va ((dinh di) OR (dinh vi)) cua te*.