Perhaps you should try some spelling variations:
danh khoa » doanh khoa, anh khoa, danh hoa
phan dau » phan tu, hang dau
hai quan » tac quan
cac thoi » cac toi, cac hop, cac tro
khoa hoc » hoa hoc
thoi dap » hoi dap, thoi dai, thi dap
hoc danh » hoc dan, hoc anh, hoc hanh
mon hoc » toan hoc, dong hoc
cuu mon » cuu mo, cuu mot, cuu cong
thu cac » tu cac, thu xac, thu cuc
hoc xa » hoc ma
ha van » hoa van, nha van, va van

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu cac thoi dap, nghien cuu mon hoc danh khoa hoc xa ((hai quan) or (ha van)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu cac thoi dap, nghien cuu mon hoc danh khoa hoc xa ((hai quan) OR (ha van)) phan dau.
• Adding a wildcard symbol may retrieve word variants: thu cac thoi dap, nghien cuu mon hoc danh khoa hoc xa ((hai quan) or (ha van)) phan dau*.