Perhaps you should try some spelling variations:
nganh thong » nganh khong, nganh cong, nhanh chong
nghien cua » nghien cuu, nghiep cua, nghe cua
nghiep vua » nghiep va, nghiep vu
hoa nganh » hoc nganh, khoi nganh, hoa doanh
thong hoa » thong khoa, thong ha, thong hoc
mach hoc » cach hoc, dich hoc, anh hoc
cong hoa » dong hoa, dong hoc, hang hoa
tu mach » tu cach, tu manh, tu hach
nhan va » nhan tai, nhan dan, nhan tao
hoi ca » hoi cua, hoi cac, hoi cau

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 cua) OR (nghiep vua)) cong hoa nganh thong hoa xa hoi ca nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, ((nghien cua) OR (nghiep vua)) cong hoa nganh thong hoa xa hoi ca nhan va".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, ((nghien cua) OR (nghiep vua)) cong hoa nganh thong hoa xa hoi ca nhan va*.