Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
vai cua » dai cua, hai cua, lai cua
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
cach tu » cach thuc
cua tre » cua te, cuu tre, cua triet
xac va » tac va, ac va, bac va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (cach tu)) nang x hoi. hieu ve chat ((xac va) or (duc va)) danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (cach tu)) nang x hoi. hieu ve chat ((xac va) OR (duc va)) danh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (cach tu)) nang x hoi. hieu ve chat ((xac va) or (duc va)) danh vai cua tre*.