Perhaps you should try some spelling variations:
hanh thoi » hanh thuoc, nhanh thai, hanh noi
thoi dap » hoi dap, thoi dai, thi dap
dan khoa » dang khoa, da khoa, san khoa
khoa hoc » hoa hoc
nhan dan » phan dau, gian dan
nhan tai » hang tai, van tai, toan tai
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hoi van » hoi va, hoi dan, hai van
hoc xa » hoc ma
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuc hanh thoi dap, nghien cuu mot hoc dan khoa hoc xa hoi van ((nhan dan) or (nhan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuc hanh thoi dap, nghien cuu mot hoc dan khoa hoc xa hoi van ((nhan dan) OR (nhan tai)).
• Adding a wildcard symbol may retrieve word variants: thuc hanh thoi dap, nghien cuu mot hoc dan khoa hoc xa hoi van ((nhan dan) or (nhan tai))*.