Perhaps you should try some spelling variations:
hieu viec » nhieu viec, sieu viet, hieu hien
bach tuoc » sach duoc, sach nuoc
ban hanh » ban hang
tuoc ban » thuoc ban, quoc ban, buoc ban
vu sach » vu bach, su sach, vu khach
hanh ca » hanh cac, hanh cat, hanh cua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang o » nang co, nang ho, nang ro
ca cua » co cua
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty nang o hoi. ((hieu viec) OR (hieu ve)) bach tuoc ban hanh ca cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang o hoi. ((hieu viec) OR (hieu ve)) bach tuoc ban hanh ca cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang o hoi. ((hieu viec) OR (hieu ve)) bach tuoc ban hanh ca cua tre*.