Perhaps you should try some spelling variations:
hoc thanh » hoc nhanh, hoan thanh, hoc phan
thoi tap » toi tap, thoi dai, hoi tai
cong hoa » dong hoa, dong hoc, hang hoa
phat van » pham van, phan van, phap van
su cach » su sach, tu cach, su cac
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc

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

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