Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
day nhanh » day thanh, duy nhanh, dac nhan
day manh » van manh, duc manh, ha manh
sach ly » sach lo, sach ty, sach hay
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
di cua » dai cua, doi cua, de cua
cua te » cua tu
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 ((sach ly) OR (sach y)) nang x hoi. hieu ve cham thuc ((day manh) or (day nhanh)) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ly) OR (sach y)) nang x hoi. hieu ve cham thuc ((day manh) OR (day nhanh)) di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ly) OR (sach y)) nang x hoi. hieu ve cham thuc ((day manh) or (day nhanh)) di cua te".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ly) OR (sach y)) nang x hoi. hieu ve cham thuc ((day manh) or (day nhanh)) di cua te*.