Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
tai cua » thai cua, tai cuc, tri cua
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
cam lo » nam lo, cam ly, cam o

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

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