Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
viec bach » vien bach, viec ban, viec bao
bach tuoc » sach duoc, sach nuoc
tuoc gia » quoc gia, toc gia, luoc gia
nang ma » tang ma, sang ma, nang cao
hanh va » hang va
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ma hoa. nhieu viec bach tuoc gia ((hanh va) OR (hanh vi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ma hoa. nhieu viec bach tuoc gia ((hanh va) OR (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoa. nhieu viec bach tuoc gia ((hanh va) OR (hanh vi)) cua tre*.