Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec bach » vien bach, viec ban, viec bao
bach luoc » bach tuoc, sach duoc, sach nuoc
nang doc » nang luc
luoc ban » luoc can, quoc ban, buoc ban
ban hanh » ban hang
hanh tri » thanh tri, hanh tai, hanh trinh
nang co » nang cao, nang noi, nang hoc
tri cuu » tri cua, tra cuu, trinh cuu
cuu tre » cua tre, cau tren, cau treo
su sac » su sach, su cac, su xac
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: su sac ky ((nang co) or (nang doc)) hoi. hieu viec bach luoc ban hanh tri cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang co) OR (nang doc)) hoi. hieu viec bach luoc ban hanh tri cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang co) or (nang doc)) hoi. hieu viec bach luoc ban hanh tri cuu tre*.