Perhaps you should try some spelling variations:
can thuc » dan thuc, van thuc, cay thuc
thuc day » thuc dan, thuc vat
day hanh » day nhanh, day thanh, dao hanh
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hai cua » thai cua, dai cua, lai cua
hoi cua » hoi chuc

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