Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
sai cua » hai cua, lai cua, bai cua
va hanh » van hanh, va thanh, va danh
cac loc » cac lop, cac toc, cac hoc
hieu ve » hieu va, hieu van
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
te sach » toc sach
ve cac » va cac, vien cac
loc va » hoc 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: ((tu sach) or (te sach)) ky tang xa hoi. hieu ve cac loc va hanh ((sai cua) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky tang xa hoi. hieu ve cac loc va hanh ((sai cua) OR (dai cua)) te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky tang xa hoi. hieu ve cac loc va hanh ((sai cua) or (dai cua)) te*.