Perhaps you should try some spelling variations:
day nhanh » day thanh, duy nhanh, dac nhan
pham thuc » phap thuc, pham chuc, nham thuc
day hanh » day thanh, dao hanh, day manh
bach ky » bac ky
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
tue cua » te cua
de cua » le cua, te cua, dieu cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach ky nang x hoi. hieu ve pham thuc ((day hanh) or (day nhanh)) ((de cua) or (tue cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ky nang x hoi. hieu ve pham thuc ((day hanh) OR (day nhanh)) ((de cua) OR (tue cua)) tre.
• Adding a wildcard symbol may retrieve word variants: vu bach ky nang x hoi. hieu ve pham thuc ((day hanh) or (day nhanh)) ((de cua) or (tue cua)) tre*.