Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hieu van » hieu va, thien van, lieu va
van anh » van thanh, tuan anh, van minh
duc van » duc va, duc tan, duc manh
hoc sac » hoc sach, hoc cac, hoc mac
mai hoi » mai khoi, dai hoi, lai hoi
ky dang » ky danh
nam duc » nam duoc, pham duc, nam thuc
anh vi » hanh vi, anh va, anh ve
cua te » cua tu

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: hoc sac ((ky dang) OR (ky nang)) mai hoi. hieu van nam duc van anh vi ((cua te) OR (ve triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sac ((ky dang) OR (ky nang)) mai hoi. hieu van nam duc van anh vi ((cua te) or (ve triet))~".
• Adding a wildcard symbol may retrieve word variants: hoc sac ((ky dang) OR (ky nang)) mai hoi. hieu van nam duc van anh vi ((cua te) or (ve triet))*.