Perhaps you should try some spelling variations:
coc nganh » hoc nganh, chuc nganh, hoc nhanh
cac nganh » hoc nganh
kon dich » mon dich, kinh dich, rong dich
dich hoc » sinh hoc, hinh hoc, tinh hoc
cuu cong » cua cong, thu cong, cac cong
thuoc va » thuc va, thuoc ma, thuong va
nhan va » nhan tai, nhan dan, nhan tao
va hoi » xa hoi, va hoc, va hoa
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: kon dich hoc tap, nghien cuu cong ((coc nganh) OR (cac nganh)) dung thuoc va hoi ca nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "kon dich hoc tap, nghien cuu cong ((coc nganh) OR (cac nganh)) dung thuoc va hoi ca nhan va".
• Adding a wildcard symbol may retrieve word variants: kon dich hoc tap, nghien cuu cong ((coc nganh) OR (cac nganh)) dung thuoc va hoi ca nhan va*.