Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
day nhanh » day thanh, duy nhanh, dac nhan
dao thanh » ban thanh, tro thanh, de thanh
day manh » van manh, duc manh, ha manh
cua tre » cua te, cuu tre, cua triet
doi cua » dai cua, hoi cua
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
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 sac ky nang x hoi. hieu ve pham thuc ((((day manh) or (dao thanh))) or (day nhanh)) doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang x hoi. hieu ve pham thuc ((((day manh) OR (dao thanh))) OR (day nhanh)) doi cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang x hoi. hieu ve pham thuc ((((day manh) or (dao thanh))) or (day nhanh)) doi cua tre*.