Perhaps you should try some spelling variations:
van tuan » van quan, anh tuan
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang co » nang cao, nang doc, nang noi
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
co hoi » co hoc, co loi
ve cam » ve cham, ve cac, va cam
vi 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 co hoi. hieu ve cam xuc ((van tuan) OR (van ban)) ((vi cua) or (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang co hoi. hieu ve cam xuc ((van tuan) OR (van ban)) ((vi cua) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang co hoi. hieu ve cam xuc ((van tuan) OR (van ban)) ((vi cua) or (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang co hoi. hieu ve cam xuc ((van tuan) OR (van ban)) ((vi cua) or (vai cua)) tre*.