Perhaps you should try some spelling variations:
ngan khoa » nganh khoa, nhan khoa, nhuan khoa
sach hoi » sach doi, sach moi, cach thoi
cuu cong » cua cong, thu cong, cac cong
cong luc » dong luc, cong suc, cong duc
luc ngan » luc nganh, luc nhan, luat ngan
khoa hoc » hoa hoc
nhan tai » hang tai, van tai, toan tai
su sach » so sach, vu sach
hoi tap » hoi dap, hoc tap, hoi tai
nhan va » nhan dan, nhan tao, phan van
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: su sach hoi tap, nghien cuu cong luc ngan khoa hoc xa hoi va ((nhan va) or (nhan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoi tap, nghien cuu cong luc ngan khoa hoc xa hoi va ((nhan va) OR (nhan tai)).
• Adding a wildcard symbol may retrieve word variants: su sach hoi tap, nghien cuu cong luc ngan khoa hoc xa hoi va ((nhan va) or (nhan tai))*.