Perhaps you should try some spelling variations:
thuoc nganh » thuong nganh, hoc nganh, chuc nganh
long thuoc » luong thuoc, dong thuoc, khong thuoc
cuu long » cuu cong, cuu tong, cuu nang
cong hoc » dong hoc, cong coc, cong ho
cong hoa » dong hoa, dong hoc, hang hoa
dac nhan » cac nhan, danh nhan, ca nhan
nhan van » nhan dan, nhan va, phan van
ke sinh » ve sinh, ky sinh, ki sinh
hoi dac » hoi dap, hoi dan, hoi dat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ke sinh hoc tap, nghien cuu long thuoc nganh ((cong hoc) OR (cong hoa)) xa hoi dac nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ke sinh hoc tap, nghien cuu long thuoc nganh ((cong hoc) OR (cong hoa)) xa hoi dac nhan van".
• Adding a wildcard symbol may retrieve word variants: ke sinh hoc tap, nghien cuu long thuoc nganh ((cong hoc) OR (cong hoa)) xa hoi dac nhan van*.