Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, khoa thuoc
khoi nganh » hoc nganh, moi nganh
dong thuoc » dung thuoc, dang thuoc, don thuoc
long khoi » long khoa, tong khoi, xong khoi
sach hoc » cach hoc, sach hoi, mach hoc
cuu long » cuu cong, cuu tong, cuu nang
hang tai » hang va, dung tai
vu sach » vu bach, su sach, vu khach
ca hang » cua hang, ca chang, va hang
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: vu sach hoc tap, nghien cuu long khoi nganh ((khong thuoc) OR (dong thuoc)) xa hoi ca hang tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach hoc tap, nghien cuu long khoi nganh ((khong thuoc) OR (dong thuoc)) xa hoi ca hang tai".
• Adding a wildcard symbol may retrieve word variants: vu sach hoc tap, nghien cuu long khoi nganh ((khong thuoc) OR (dong thuoc)) xa hoi ca hang tai*.