Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
tranh hoa » thanh hoa, trinh hoa, tranh ha
dich hoc » sinh hoc, hinh hoc, tinh hoc
cu tranh » co tranh, cu thanh, cuoc tranh
nhan van » nhan va, phan van, nha van
nhan dan » phan dau, gian dan, nhan tai
te dich » ve dich, tam dich, tap dich
cong cu » chung cu
hoc xa » hoc ma
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: te dich hoc tap, nghien thu cong cu tranh hoa hoc xa hoi ca ((nhan van) OR (nhan dan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te dich hoc tap, nghien thu cong cu tranh hoa hoc xa hoi ca ((nhan van) OR (nhan dan))".
• Adding a wildcard symbol may retrieve word variants: te dich hoc tap, nghien thu cong cu tranh hoa hoc xa hoi ca ((nhan van) OR (nhan dan))*.