Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nhanh than » nhanh thanh, nhanh thang, nhanh thai
hieu viec » nhieu viec, hieu ve, sieu viet
dang cap » nang cap, dang ca, dang cac
cap phoi » cap cho
viec hoc » viec doc, viec khoa, viec nhom
hoc dung » hoc ung, hoc dan, tac dung
va nhanh » va thanh, va hanh, va nhan
than cua » nhan cua, thai cua, ban cua
tu sach » thu sach, su sach, te sach
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thuat sach)) ky dang cap phoi. hieu viec hoc dung va nhanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky dang cap phoi. hieu viec hoc dung va nhanh than cua tre*.