Perhaps you should try some spelling variations:
thanh dan » thanh san, thanh van, thanh dat
ly quang » vu quang
le quang » vu quang
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
dan cua » dan ca, ban cua, dai cua
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cai

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 ((ly quang) OR (le quang)) xa hoi. hieu ((va cam) or (va cao)) xuc va thanh dan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ly quang) OR (le quang)) xa hoi. hieu ((va cam) OR (va cao)) xuc va thanh dan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ly quang) OR (le quang)) xa hoi. hieu ((va cam) or (va cao)) xuc va thanh dan cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ly quang) OR (le quang)) xa hoi. hieu ((va cam) or (va cao)) xuc va thanh dan cua tre*.