Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
thanh ca » thanh cha, thanh cac, thanh ha
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
thuc va » thuc vat, thuc dan, thuc day
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
va cam » va cham, va cac, va cao
ca cua » co cua
ve cam » ve cham, ve cac, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (toc sach)) ty lang xa hoi. hieu ((ve cam) OR (va cam)) thuc va thanh ca cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty lang xa hoi. hieu ((ve cam) OR (va cam)) thuc va thanh ca cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ty lang xa hoi. hieu ((ve cam) OR (va cam)) thuc va thanh ca cua viet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ty lang xa hoi. hieu ((ve cam) OR (va cam)) thuc va thanh ca cua viet*.