Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
thu sach » tu sach, thuat sach, thuoc sach
dua ban » dia ban, cua ban, qua ban
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, dua tren
va cam » va cham, va cac, va cai
y lang » o lang, _ lang, tay lang
va cao » va cac, va co, va dao

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