Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vai » thanh hai, thanh van, thanh tai
duc ban » duc tan, duc van, duc man
vai cua » dai cua, hai cua, lai cua
dua ban » dia ban, cua ban, qua ban
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va cao » va cac, va co, va dao
va cam » va cham, va cac, va cai

You may be able to get more results by adjusting your search query.

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