Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
thien van » thi van
cham thuc » nham thuc, pham thuc, tham thuc
hoc sach » hoc sinh, hoc cac, hoc anh
van cham » van chat, van tham, va cham
thuc dan » thuc hanh, hoc dan, thuc vat
dan dinh » dang dinh, doan dinh, van dinh
dinh bat » danh bat, dinh ba, dinh dat
nang xa » nang x, lang xa, nang ma
bat cua » ban cua, mat cua, bai cua
cua tre » cua te, cuu tre, cua triet

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

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