Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dan thanh » dang thanh, danh thanh, ban thanh
thanh ha » thanh hoa, thanh hai, nhanh ha
thuc dan » thuc hanh, hoc dan, thuc vat
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, dua tren
te sach » toc sach
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
va cam » va cham, va cac, va cao
ve cam » ve cham, ve cac, ve cai
ha hoi » hoa hoi, ha noi, xa hoi

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 ky dang ha hoi. hieu ((ve cam) OR (va cam)) thuc dan thanh ha ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ha hoi. hieu ((ve cam) OR (va cam)) thuc dan thanh ha ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang ha hoi. hieu ((ve cam) OR (va cam)) thuc dan thanh ha ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ha hoi. hieu ((ve cam) OR (va cam)) thuc dan thanh ha ((cua tre) or (cua triet))*.