Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
vien dai » hien dai
van anh » van thanh, tuan anh, van minh
cua tre » cua te, cua triet, dua tren
anh via » anh va, anh bia, anh viet
cuu tre » cau tren, cau treo
vien da » hien dai
lang xa » lang ha, dang xay, lang van
y lang » o lang, _ lang, tay lang
lo van » le van, vo van, so van

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 y lang xa hoi. hieu ((vien dai) or (vien da)) lo van anh via ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y lang xa hoi. hieu ((vien dai) OR (vien da)) lo van anh via ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: thu sach y lang xa hoi. hieu ((vien dai) or (vien da)) lo van anh via ((cua tre) or (cuu tre))*.