Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nham thuc » nhan thuc, nam thuc, nham thu
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
ve nham » ve nha, ve cham
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((do sanh) or (thuoc sach)) ky nang ma hoi. hieu ve nham thuc va hanh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((do sanh) OR (thuoc sach)) ky nang ma hoi. hieu ve nham thuc va hanh vi ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((do sanh) or (thuoc sach)) ky nang ma hoi. hieu ve nham thuc va hanh vi ((cua tre) OR (cuu tre))*".