Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
luc tuan » luc luan, luc quan, luu tuan
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
vi cua » di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) y nang xa hoi. hieu ve cac luc tuan anh ((vi cua) OR (vai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) y nang xa hoi. hieu ve cac luc tuan anh ((vi cua) or (vai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) y nang xa hoi. hieu ve cac luc tuan anh ((vi cua) or (vai cua)) tre*.