Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
ban thanh » ban hanh, ban hang
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
ve cam » ve cham, ve cac, va cam
hai va » hai van, thai va, hoi va

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 ((ky tang) OR (ky dang)) xa hoi. hieu ve cam duc ban thanh hai va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky tang) OR (ky dang)) xa hoi. hieu ve cam duc ban thanh hai va triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky tang) OR (ky dang)) xa hoi. hieu ve cam duc ban thanh hai va triet*.