Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh van » thanh san, thanh toan, thanh phan
thu sach » tu sach, thuoc sach, thu hoach
va thanh » gia thanh, ban thanh, va tinh
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
van xa » van xay, van ha, dan xa
xuc va » duc va, tuc va, luc va
ly van » le van, ly va, ly von
va cai » va bai, va dai, va cao

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 (thuat sach)) ly van xa hoi. hieu ((va cai) or (va cac)) xuc va thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) ly van xa hoi. hieu ((va cai) OR (va cac)) xuc va thanh van cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuat sach)) ly van xa hoi. hieu ((va cai) or (va cac)) xuc va thanh van cua tre*".