Perhaps you should try some spelling variations:
day hanh » day nhanh, day thanh, dao hanh
thuc day » thuc dan, thuc vat
dang xay » dang van, van xay
cua tuc » cua duc, cua thuoc, luat tuc
hanh di » hanh vi, hanh de, hang di
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
sac ky » sai ky
cua tu » cua su, cua cu, cua te
ve am » va am

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sac ky) or (cac ky)) dang xay hoi. hieu ve am thuc day hanh di ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sac ky) OR (cac ky)) dang xay hoi. hieu ve am thuc day hanh di ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sac ky) or (cac ky)) dang xay hoi. hieu ve am thuc day hanh di ((cua tu) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: vu ((sac ky) or (cac ky)) dang xay hoi. hieu ve am thuc day hanh di ((cua tu) OR (cua tuc))*.