Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hach hoc » cach hoc, mach hoc, hoach hoi
danh hoa » thanh hoa, khanh hoa, nganh hoa
cua nhan » ca nhan, cua ngan, cua nhung
tu hach » tu hanh, tu cach, tu sach
cong co » dong co, cong cu, cong so
co danh » cao danh, co dan, do danh
cua nha » cua ngan
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: tu hach hoc tap, nghien thu cong co danh hoa hoc xa hoi ((cua nhan) OR (cua nha)) dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu hach hoc tap, nghien thu cong co danh hoa hoc xa hoi ((cua nhan) OR (cua nha)) dan".
• Adding a wildcard symbol may retrieve word variants: tu hach hoc tap, nghien thu cong co danh hoa hoc xa hoi ((cua nhan) OR (cua nha)) dan*.