Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
thuc va » thuc vat, thuc dan, thuc day
sach ty » sach y, sach thu, xach tay
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
xang xa » lang xa, mang xa, ang xa
sach tu » sach thu, cach tu, sach uu
tuc va » truc va, tuc xa, duc va
cua te » cua tu

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 ty) or (sach tu)) xang xa hoi. hieu va chat ((tuc va) OR (thuc va)) hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach tu)) xang xa hoi. hieu va chat ((tuc va) OR (thuc va)) hanh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach tu)) xang xa hoi. hieu va chat ((tuc va) OR (thuc va)) hanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach tu)) xang xa hoi. hieu va chat ((tuc va) OR (thuc va)) hanh dai cua te*.