Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
khach hoc » khanh hoa, cach hoc, mach hoc
khong hoc » khung hoc, thong hoc, khong chuc
vu khach » vu khanh, vu khac, vay khach
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
hoc phan » hoc dan, hoc pho
gian dan » gian lang
ca gian » ca giang, ca giao, va gian
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 khach hoc tap, nghien cuu cong hoc phan ((khong hoc) OR (khong thuoc)) xa hoi ca gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khach hoc tap, nghien cuu cong hoc phan ((khong hoc) OR (khong thuoc)) xa hoi ca gian dan".
• Adding a wildcard symbol may retrieve word variants: vu khach hoc tap, nghien cuu cong hoc phan ((khong hoc) OR (khong thuoc)) xa hoi ca gian dan*.