Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nhanh khong » nhanh chong, nganh khong, nhan khong
thanh nhan » thanh phan, thanh san, thanh toan
hoc nhanh » hoc nganh, hoc phan
hoa thanh » hoan thanh, ha thanh, hoc thanh
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
thuoc ma » hoc ma, duoc ma
nhan van » nhan dan, nhan va, phan van
vu sach » vu bach, vu khach
su sach » so sach

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) OR (su sach)) hoc tap, nghien cuu cong hoc nhanh khong thuoc ma hoa thanh nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) hoc tap, nghien cuu cong hoc nhanh khong thuoc ma hoa thanh nhan van".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (su sach)) hoc tap, nghien cuu cong hoc nhanh khong thuoc ma hoa thanh nhan van*.