Perhaps you should try some spelling variations:
hoc thanh » hoc nhanh, hoan thanh, hoc phan
thanh don » thanh dong, thanh son, thanh do
don thuoc » dong thuoc, dung thuoc, dang thuoc
sach moi » sach doi, sach hoi, bach mai
phap van » pham van, phan van, phap han
tu sach » thu sach, su sach, te sach
moi tap » moi tai, toi tap
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va phap » va phat, ban phap
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach moi tap, nghien cuu mon hoc thanh don thuoc ((ma hoi) or (xa hoi)) va phap van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach moi tap, nghien cuu mon hoc thanh don thuoc ((ma hoi) OR (xa hoi)) va phap van.
• Adding a wildcard symbol may retrieve word variants: tu sach moi tap, nghien cuu mon hoc thanh don thuoc ((ma hoi) or (xa hoi)) va phap van*.