Perhaps you should try some spelling variations:
cong thuoc » cong thuc, dong thuoc, long thuoc
hoc thanh » hoc nhanh, hoan thanh, hoc phan
thuoc xa » thuoc ma, thuoc va, thuoc la
phap van » pham van, phan van, phap han
su sach » so sach, vu sach
hoi tap » hoi dap, hoi tai, hai tap
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va phap » va phat, ban phap

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

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