Perhaps you should try some spelling variations:
quyen hanh » quyen anh, quen hanh, quyet thanh
nhung gai » nhung giai, nhung ngai, nhung bai
gai quang » mai quang, cai quang, oai quang
quang van » quang ban, quan van, quang uan
nguoi dan » nguoi dao, nguoi san, nguong dan
nhung bi » nhung bai, nhung gi
bi quyen » bi quyet, si quyen, binh quyen
noi dung » hoc dung
dung hoc » dong hoc, dung thuoc, trung hoc
dan hoc » van hoc, dan toc, dai hoc
hoc man » hoc mang, hoc dan, hoc may

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( nhung gai quang van. nguoi dan hoc man ) or ( nhung bi quyen hanh. noi dung hoc ma ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( nhung gai quang van. nguoi dan hoc man ) OR ( nhung bi quyen hanh. noi dung hoc ma )).
• Adding a wildcard symbol may retrieve word variants: (( nhung gai quang van. nguoi dan hoc man ) or ( nhung bi quyen hanh. noi dung hoc ma ))*.