Perhaps you should try some spelling variations:
gia doanh » gia thanh, gia dinh, giai doan
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
nam duoc » nam thuoc, da duoc, dat duoc
duoc gia » duoc giao, quoc gia, duc gia
nang ma » tang ma, sang ma, nang cao
ca viet » va viet, co viet, hoa viet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang ma hoa. hieu van nam duoc gia doanh tai ((cua triet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang ma hoa. hieu van nam duoc gia doanh tai ((cua triet) OR (ca viet)).
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ma hoa. hieu van nam duoc gia doanh tai ((cua triet) or (ca viet))*.