Perhaps you should try some spelling variations:
cach thoi » cac thoi, cach thuc
bang khoa » hang khoa, dang khoa, vang khoa
phan dang » phan dau, phan cong, nhan dan
cach noi » hanh noi, anh noi, cau noi
hoc bang » hoc bong, hoc tang, hoc dan
khoa hoc » hoa hoc
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
va phan » van phan, va phat, va phap
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: te ((cach thoi) OR (cach noi)) dai, nghien cuu mot hoc bang khoa hoc xa hoi va phan dang~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((cach thoi) OR (cach noi)) dai, nghien cuu mot hoc bang khoa hoc xa hoi va phan dang".
• Adding a wildcard symbol may retrieve word variants: te ((cach thoi) OR (cach noi)) dai, nghien cuu mot hoc bang khoa hoc xa hoi va phan dang*.