Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
luc nganh » luc ngan, chuc nganh, luat nganh
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
cong luc » dong luc, cong suc, cong duc
khoa hoc » hoa hoc
phan van » pham van, thanh van, luan van
tu mach » tu cach, tu manh, tu hach
hoi cau » hoi chu, hoc cau, hoa cau
hoi ca » hoi cua, hoi cac, hoi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu mach hoc tap, nghien cuu cong luc nganh khoa hoc ma ((hoi ca) OR (hoi cau)) phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cuu cong luc nganh khoa hoc ma ((hoi ca) OR (hoi cau)) phan van".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu cong luc nganh khoa hoc ma ((hoi ca) OR (hoi cau)) phan van*.