Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
cham duc » pham duc, pham duy, phan duc
te sach » toc sach
tai cua » thai cua, tai cuc, tri cua
va hanh » van hanh, va thanh, va danh
tu nano » truc nano
tu nang » tru nang, tu nong, tu lang
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((tu nang) or (tu nano)) xa hoi. lieu va ((cham duc) or (cham soc)) va hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nang) OR (tu nano)) xa hoi. lieu va ((cham duc) OR (cham soc)) va hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nang) or (tu nano)) xa hoi. lieu va ((cham duc) or (cham soc)) va hanh tai cua tre*.