Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
tinh via » tinh gia, tinh va, tinh giao
dang tao » sang tao, nang tao, vang tao
tinh vi » trinh vi, tinh voi, tinh va
cac tuc » cac toc, cac tu, cac tac
tu sach » thu sach, su sach, tu cach
tao hoi » tao khoi, tao boi, tay hoi
ky dang » ky nang, ky danh
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa

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 (te sach)) ky dang tao hoi. hieu viec cac tuc va ((tinh via) or (tinh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky dang tao hoi. hieu viec cac tuc va ((tinh via) OR (tinh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky dang tao hoi. hieu viec cac tuc va ((tinh via) or (tinh vi)) cua tre*.