Perhaps you should try some spelling variations:
dich hoc » sinh hoc, hinh hoc, tinh hoc
hoc tran » hoc tan, hoc tren, hoc than
boc tran » soc trang, bich tran, buc tranh
khoa hoc » hoa hoc
tu dich » te dich, chu dich, hut dich
cuu mon » cuu mo, cuu mot, cuu cong
va phan » van phan, va phat, va phap
phan va » phan van, nhan va, han va
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: tu dich hoc tap, nghien cuu mon ((hoc tran) OR (boc tran)) khoa hoc xa hoi va phan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dich hoc tap, nghien cuu mon ((hoc tran) OR (boc tran)) khoa hoc xa hoi va phan va".
• Adding a wildcard symbol may retrieve word variants: tu dich hoc tap, nghien cuu mon ((hoc tran) OR (boc tran)) khoa hoc xa hoi va phan va*.