Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
dat cua » dai cua, day cua, mat cua
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky tang) OR (ky dang)) xa hoi. hieu van cam duc ban thanh dat cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky tang) OR (ky dang)) xa hoi. hieu van cam duc ban thanh dat cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) OR (ky dang)) xa hoi. hieu van cam duc ban thanh dat cua tre*.