Perhaps you should try some spelling variations:
tang thanh » dang thanh, trung thanh, hoang thanh
tan thanh » tran thanh, toan thanh, ban thanh
kho tang » cao tang
cua tre » cua te, cuu tre, cua triet
cam duc » cam xuc, cao duc, pham duc
san cua » sang cua, ban cua, dan cua
hieu ve » hieu va, hieu van
ky tang » ky nang, ky dang, ky trong
ve cam » ve cham, ve cac, va cam
su sac » su sach, su cac, su xac

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: su sac ((ky tang) OR (kho tang)) xa hoi. hieu ve cam duc ((tan thanh) OR (tang thanh)) san cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky tang) or (kho tang)) xa hoi. hieu ve cam duc ((tan thanh) OR (tang thanh)) san cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (kho tang)) xa hoi. hieu ve cam duc ((tan thanh) OR (tang thanh)) san cua tre*.