Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
cach hoc » cach thuc, cach thoi, dich hoc
thu dong » thuy dong, tu dong, thu cong
dong hoc » dong co, dong luc
nhan tai » hang tai, van tai, toan tai
tu cach » tu cac
hoi dan » hoa dan, hoc dan, hoi dap
nhan va » nhan dan, nhan tao, phan van
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach hoc tap, nghien thu dong hoc nganh hoa hoc ma hoi dan ((nhan va) OR (nhan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach hoc tap, nghien thu dong hoc nganh hoa hoc ma hoi dan ((nhan va) OR (nhan tai))".
• Adding a wildcard symbol may retrieve word variants: tu cach hoc tap, nghien thu dong hoc nganh hoa hoc ma hoi dan ((nhan va) OR (nhan tai))*.