Perhaps you should try some spelling variations:
day nhanh » day thanh, duy nhanh, dac nhan
day hanh » day thanh, dao hanh, day manh
vu sach » vu bach, su sach, vu khach
ty nang » ky nang, ty xang, ty hang
sach ty » sach y, sach tu, sach thu
ve cham » va cham, ve chat, vu cham
cua te » cua tu
ve cam » ve cac, va cam, ve cai
nang o » nang co, nang ho, nang ro
o hoi » co hoi, o hoc, o hai

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

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