Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
cham tuc » nham thuc, pham thuc, tham thuc
su sach » vu sach
vai cua » dai cua, hai cua, lai cua
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
so sach » so sanh, bo sach, co sach
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) ((ty nang) OR (ty hang)) xa hoi. hieu ve cham tuc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ((ty nang) OR (ty hang)) xa hoi. hieu ve cham tuc va thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ((ty nang) OR (ty hang)) xa hoi. hieu ve cham tuc va thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ((ty nang) OR (ty hang)) xa hoi. hieu ve cham tuc va thanh vai cua tre*.