Perhaps you should try some spelling variations:
phan chong » phan cong, phan hong, phap chong
chong hoc » chung hoc, chong doc, thong hoc
thu mach » thu sach, thuat mach, thu hoach
mach hoc » cach hoc, dich hoc, anh hoc
hoc phan » hoc dan, hoc pho
dap nhan » dap nha, dam nhan, danh nhan
dac nhan » cac nhan, danh nhan, ca nhan
mo hoc » mon hoc, co hoc
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu mach hoc tap, nghien cuu mo hoc phan chong hoc xa hoi ((dap nhan) OR (dac nhan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu mach hoc tap, nghien cuu mo hoc phan chong hoc xa hoi ((dap nhan) OR (dac nhan)) van".
• Adding a wildcard symbol may retrieve word variants: thu mach hoc tap, nghien cuu mo hoc phan chong hoc xa hoi ((dap nhan) OR (dac nhan)) van*.