Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hoc khanh » hoc nhanh, hoc thanh, hoc hanh
khanh hoa » thanh hoa, hang hoa
toc mach » toc sach, hoc mac, tim mach
mach hoc » cach hoc, dich hoc, anh hoc
cong hoc » dong hoc, cong hoa, cong coc
nhan van » nhan dan, phan van, nha van
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc mach hoc tap, nghien thu cong hoc khanh hoa hoc xa hoi va ((nhan van) OR (nhan va))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc mach hoc tap, nghien thu cong hoc khanh hoa hoc xa hoi va ((nhan van) OR (nhan va))".
• Adding a wildcard symbol may retrieve word variants: toc mach hoc tap, nghien thu cong hoc khanh hoa hoc xa hoi va ((nhan van) OR (nhan va))*.