Perhaps you should try some spelling variations:
hang thuoc » khang thuoc, dang thuoc, hanh thuoc
thu sach » tu sach, thuat sach, thuoc sach
sach doi » sach hoi, sach moi, sach dao
dong hoc » dong co, dong luc
thuoc xa » thuoc ma, thuoc va, thuoc la
phan dan » phan dang, phan dau, nhan dan
doi tap » doi tac, doi dap, doi tai
mon hoc » toan hoc
va phan » van phan, va phat, va phap

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach doi tap, nghien cuu ((mon hoc) or (dong hoc)) ngan hang thuoc xa hoi va phan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach doi tap, nghien cuu ((mon hoc) OR (dong hoc)) ngan hang thuoc xa hoi va phan dan.
• Adding a wildcard symbol may retrieve word variants: thu sach doi tap, nghien cuu ((mon hoc) or (dong hoc)) ngan hang thuoc xa hoi va phan dan*.