Perhaps you should try some spelling variations:
duy nhanh » duy khanh, day nhanh, duy anh
day hanh » day nhanh, day thanh, dao hanh
sach ky » sac ky, sach y, sach ty
vu sach » vu bach, su sach, vu khach
ve pham » vi pham, ve phan, ve phat
cuu tre » cua tre, cau tren, cau treo
v pham » vi pham, d pham
de cuu » de 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 sach ky nang x hoi. hieu ((ve pham) OR (v pham)) thuc ((day hanh) or (duy nhanh)) de cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. hieu ((ve pham) OR (v pham)) thuc ((day hanh) OR (duy nhanh)) de cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang x hoi. hieu ((ve pham) OR (v pham)) thuc ((day hanh) or (duy nhanh)) de cuu tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x hoi. hieu ((ve pham) OR (v pham)) thuc ((day hanh) or (duy nhanh)) de cuu tre*.