Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thien van » thi van
van cham » van chat, van tham, va cham
hang dau » hang va, hang tai
dau cua » dai cua, day cua, cau cua
hoc cac » hoc cao
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc cac) or (thuoc sach)) ky nang xa hoi. thien van cham ((tuc va) or (tuc xa)) hang dau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc cac) OR (thuoc sach)) ky nang xa hoi. thien van cham ((tuc va) OR (tuc xa)) hang dau cua tre.
• Adding a wildcard symbol may retrieve word variants: ((hoc cac) or (thuoc sach)) ky nang xa hoi. thien van cham ((tuc va) or (tuc xa)) hang dau cua tre*.