Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
dang xay » dang van, van xay
thanh ha » thanh hoa, thanh hai, nhanh ha
da thanh » dao thanh, dat thanh, dam thanh
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
thuc da » thuc dan, thuc day, thuc dia
su sach » so sach, vu sach
xay hoi » xa hoi, tay hoi, cay phoi
ty dang » ty xang, ky dang, ty hang
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty dang xay hoi. hieu ((ve cam) OR (va cam)) thuc da thanh ha ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty dang xay hoi. hieu ((ve cam) OR (va cam)) thuc da thanh ha ((cua tre) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty dang xay hoi. hieu ((ve cam) OR (va cam)) thuc da thanh ha ((cua tre) or (su triet))*".