Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
va triet » va thiet, va trien, ve triet
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
van cau » van dau, van hau, van chat
cau tuc » cau truc, cau tu, cau luc
van mai » van hai, van ai, ban mai
me hoi » le hoi
tuc va » thuc va, truc va, tuc xa

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: te sach ty nang ((me hoi) OR (xa hoi)). hieu van cau tuc va van mai va triet~.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang ((me hoi) or (xa hoi)). hieu van cau tuc va van mai va triet*.