Perhaps you should try some spelling variations:
bach khoa » anh khoa
cac thanh » bac thanh, cach nhanh, ban thanh
thanh hoa » thanh pho
khoa tap » khoa tai, khoa than, hoc tap
cuu cong » cua cong, thu cong, cac cong
cong cac » cuong cac, cong tac, cong cau
hoc benh » soc benh, hoc kinh, so benh
nhan tai » hang tai, van tai, toan tai
nhan va » nhan dan, nhan tao, phan van
hoc xa » hoc ma
xa hoc » xa hoi, va hoc, xa hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach khoa tap, nghien cuu cong cac thanh hoa hoc xa hoc benh ((nhan va) OR (nhan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu bach khoa tap, nghien cuu cong cac thanh hoa hoc xa hoc benh ((nhan va) OR (nhan tai))".
• Adding a wildcard symbol may retrieve word variants: vu bach khoa tap, nghien cuu cong cac thanh hoa hoc xa hoc benh ((nhan va) OR (nhan tai))*.