Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, dong thuoc, khoa thuoc
hong phuoc » hoang phuong
hoc nhanh » hoc nganh, hoc phan
sach hoc » cach hoc, sach hoi, mach hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
nhan tai » hang tai, van tai, toan tai
vu sach » vu bach, su sach, vu khach
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 cong hoc nhanh ((khong thuoc) OR (hong phuoc)) xa hoi ca nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach hoc tap, nghien cuu cong hoc nhanh ((khong thuoc) OR (hong phuoc)) xa hoi ca nhan tai".
• Adding a wildcard symbol may retrieve word variants: vu sach hoc tap, nghien cuu cong hoc nhanh ((khong thuoc) OR (hong phuoc)) xa hoi ca nhan tai*.