Perhaps you should try some spelling variations:
hanh doi » thanh doi, hanh noi, hang doi
su sach » so sach, vu sach
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
nang o » nang co, nang ho, nang ro
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: su sach y nang o hoi. ((hieu ve) or (lieu va)) cam ((xuc va) or (luc va)) hanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang o hoi. ((hieu ve) OR (lieu va)) cam ((xuc va) OR (luc va)) hanh doi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang o hoi. ((hieu ve) or (lieu va)) cam ((xuc va) or (luc va)) hanh doi cua tre*.