Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec bach » vien bach, viec ban, viec bao
bach tuoc » sach duoc, sach nuoc
hanh vai » hanh va, hanh tai, hanh van
tuoc va » thuoc va, nuoc va, duoc va
cua tre » cua te, cuu tre, cua triet
su cac » tu cac, su cao, su can

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky nang x ho. hieu viec bach tuoc va ((hanh vai) OR (hanh vi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky nang x ho. hieu viec bach tuoc va ((hanh vai) OR (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su cac ky nang x ho. hieu viec bach tuoc va ((hanh vai) OR (hanh vi)) cua tre*.