Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
cao hoc » co hoc, cho hoc, chat hoc
hieu ve » hieu va, hieu van
xuc anh » duc anh, luc canh, suc manh
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((ty nang) OR (ty hang)) cao hoc. hieu ve cam xuc anh tuan ((vi cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ty nang) OR (ty hang)) cao hoc. hieu ve cam xuc anh tuan ((vi cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ty nang) OR (ty hang)) cao hoc. hieu ve cam xuc anh tuan ((vi cua) or (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: so sach ((ty nang) OR (ty hang)) cao hoc. hieu ve cam xuc anh tuan ((vi cua) or (dai cua)) tre*.