Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
day nhanh » day thanh, duy nhanh, dac nhan
day hanh » day thanh, dao hanh, da hanh
day manh » van manh, duc manh, ha manh
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
di cua » dai cua, doi cua, de cua
vu sac » vu sach, vu san, va sac

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

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