Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
ky dang » ky danh
hieu ve » hieu va, hieu van
vai cua » hai cua, lai cua, bai cua
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va

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