Perhaps you should try some spelling variations:
chat tuc » chat xuc, luat tuc, chat huu
mai hoi » mai khoi, dai hoi, lai hoi
va chat » van chat, va phat, cao chat
sach ky » sac ky, sach y, sach ty
va hang » van hang, va nang, va lang
su sach » so sach, vu sach
ma hoi » xa hoi, ma hoa, me hoi
tuc va » thuc va, truc va, tuc xa
di su » doi su, da su, de su
ki su » ky su

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 sach ky nang ((ma hoi) OR (mai hoi)). lieu va chat tuc va hang ((di su) OR (ki su)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((ma hoi) or (mai hoi)). lieu va chat tuc va hang ((di su) OR (ki su)) triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ((ma hoi) or (mai hoi)). lieu va chat tuc va hang ((di su) OR (ki su)) triet*.