Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh ha » thanh hoa, thanh hai, nhanh ha
da thanh » dao thanh, dat thanh, dam thanh
cac thuc » cach thuc, cac thu, can thuc
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, dua tren
thuc da » thuc dan, thuc day, thuc dia
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
ve cac » va cac, vien cac

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 ((nang xa) OR (lang xa)) hoi. hieu ve cac thuc da thanh ha ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (lang xa)) hoi. hieu ve cac thuc da thanh ha ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang xa) OR (lang xa)) hoi. hieu ve cac thuc da thanh ha ((cua tre) or (cua triet))*".