Perhaps you should try some spelling variations:
sach tay » xach tay, sach nay, sach tai
sach hay » sach han, sach ha, sach nay
cau thuc » cau truc, cuu thuc, can thuc
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
ve cau » ke cau, va cau, ve cac
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach tay) OR (sach hay)) lang xa hoi. hieu ve cau thuc va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach tay) OR (sach hay)) lang xa hoi. hieu ve cau thuc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: vu ((sach tay) OR (sach hay)) lang xa hoi. hieu ve cau thuc va hanh vi cua tre*.