Perhaps you should try some spelling variations:
day nhanh » day thanh, duy nhanh, dac nhan
day hanh » day thanh, dao hanh, day manh
cam thuc » am thuc, nam thuc, can thuc
vu khac » vu kham, vu khanh, bui khac
khac ty » khac thi
cam thu » nam thu, cac thu, ca thu
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khac ty nang x ho. hieu ve ((cam thuc) OR (cam thu)) ((day hanh) or (day nhanh)) di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khac ty nang x ho. hieu ve ((cam thuc) OR (cam thu)) ((day hanh) OR (day nhanh)) di cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khac ty nang x ho. hieu ve ((cam thuc) OR (cam thu)) ((day hanh) or (day nhanh)) di cua tu".
• Adding a wildcard symbol may retrieve word variants: vu khac ty nang x ho. hieu ve ((cam thuc) OR (cam thu)) ((day hanh) or (day nhanh)) di cua tu*.