Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh cong » nhanh chong, thanh cong
hoa nganh » hoc nganh, khoi nganh, hoa doanh
cong hoa » dong hoa, dong hoc, hang hoa
cong hoc » dong hoc, cong coc, cong ho
nhan dan » phan dau, gian dan, nhan tai
toc tap » toc tay, hoc tap, tuc tap
hai van » thai van, ha van, hai tan
nhan va » nhan tai, nhan tao, phan van
tu dan » tuc dan, tu ban, cu dan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan toc tap, nghien thu cong hoa nganh cong hoc xa hai van ((nhan va) or (nhan dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan toc tap, nghien thu cong hoa nganh cong hoc xa hai van ((nhan va) OR (nhan dan)).
• Adding a wildcard symbol may retrieve word variants: tu dan toc tap, nghien thu cong hoa nganh cong hoc xa hai van ((nhan va) or (nhan dan))*.