Perhaps you should try some spelling variations:
tay quang » tac quang, tai quang, tao quang
manh than » manh thang, manh toan, manh tuan
thu sach » tu sach, thuat sach, thuoc sach
sach tay » xach tay, sach hay, sach nay
quang xa » quan xa, quang ma, quang va
than cua » nhan cua, thai cua, ban cua
va manh » van manh, va danh, va hanh
cua tre » cua te, cuu tre, cua triet
ve cai » va cai, ve cac, ve tai

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 tay quang xa hoi. hieu ((ve cai) or (va cac)) duc va manh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach tay quang xa hoi. hieu ((ve cai) OR (va cac)) duc va manh than cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach tay quang xa hoi. hieu ((ve cai) or (va cac)) duc va manh than cua tre*.