Perhaps you should try some spelling variations:
khanh van » thanh van, khanh vinh, hanh va
pham thuc » phap thuc, pham chuc, nham thuc
va khanh » van khanh, va thanh, vu khanh
su triet » su viet, su tien, ve triet
nang ma » tang ma, sang ma, nang cao
hieu vi » hieu voi, hieu va, hieu ve
thuc va » thuc vat, thuc dan, thuc day
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
van su » dan su

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((sac ky) or (sach y)) nang ma hoi. hieu vi pham thuc va khanh van su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((sac ky) OR (sach y)) nang ma hoi. hieu vi pham thuc va khanh van su triet.
• Adding a wildcard symbol may retrieve word variants: doc ((sac ky) or (sach y)) nang ma hoi. hieu vi pham thuc va khanh van su triet*.