Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, te sach
cam cuc » cam xuc, cham cuu, pham cuc
vai cua » dai cua, hai cua, lai cua
cuc ban » cua ban, cac ban, cuu ban
hieu ve » hieu va, hieu van
vi cua » di cua
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho

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 (thuat sach)) ky nang x hoi. hieu ve cam cuc ban thanh ((vi cua) OR (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky nang x hoi. hieu ve cam cuc ban thanh ((vi cua) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat sach)) ky nang x hoi. hieu ve cam cuc ban thanh ((vi cua) OR (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ky nang x hoi. hieu ve cam cuc ban thanh ((vi cua) OR (vai cua)) tre*.