Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
cham tuc » nham thuc, pham thuc, tham thuc
so sach » so sanh, bo sach, co sach
va cham » va chat, va tham
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, v nang, may nang
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: so sach ((y nang) OR (ly nang)) ma hoi. lieu va cham tuc va ((thanh va) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((y nang) OR (ly nang)) ma hoi. lieu va cham tuc va ((thanh va) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((y nang) OR (ly nang)) ma hoi. lieu va cham tuc va ((thanh va) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ((y nang) OR (ly nang)) ma hoi. lieu va cham tuc va ((thanh va) or (hanh vi)) cua tre*.