Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thuc day » thuc dan, thuc vat
nang doi » nang doc, nang noi, hang doi
hanh de » hanh ve, hanh kem
hanh di » hanh vi, hang di, danh di
va pham » van pham, va phat, va phap
hieu va » lieu va, hieu qua
doi hoi » doi thoi, doi voi, doi moi
sac ky » sai ky
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: thu ((sac ky) OR (cac ky)) nang doi hoi. hieu va pham thuc day ((hanh di) or (hanh de)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sac ky) OR (cac ky)) nang doi hoi. hieu va pham thuc day ((hanh di) OR (hanh de)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sac ky) OR (cac ky)) nang doi hoi. hieu va pham thuc day ((hanh di) or (hanh de)) cua te".
• Adding a wildcard symbol may retrieve word variants: thu ((sac ky) OR (cac ky)) nang doi hoi. hieu va pham thuc day ((hanh di) or (hanh de)) cua te*.