Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
thanh tai » thanh hai, thanh toan, thanh san
xuc ban » duc ban, cuc ban, quoc ban
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cao hoi » cau hoi, co hoi, cao hoc
ty nang » ky nang, ty xang, ty hang
va cam » va cham, va cac, va cao
va dao » ca dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang cao hoi. hieu ((va cam) or (va dao)) xuc ban ((thanh tai) or (doanh tai)) cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang cao hoi. hieu ((va cam) OR (va dao)) xuc ban ((thanh tai) OR (doanh tai)) cau triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang cao hoi. hieu ((va cam) or (va dao)) xuc ban ((thanh tai) or (doanh tai)) cau triet*.