Perhaps you should try some spelling variations:
sach thoi » cach thoi, sach hoi, sach tham
hoc nhanh » hoc phan
thoi tap » toi tap, hoc tap, thoi dai
cuu toan » cuu hoan, cua toan, huu toan
nong hoc » dong hoc, nang hoc, nong thon
phan van » pham van, thanh van, luan van
vu sach » vu bach, su sach, vu khach
va phan » van phan, va phat, va phap
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: vu sach thoi tap, nghien cuu toan ((hoc nganh) OR (hoc nhanh)) nong hoc xa hoi va phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach thoi tap, nghien cuu toan ((hoc nganh) OR (hoc nhanh)) nong hoc xa hoi va phan van".
• Adding a wildcard symbol may retrieve word variants: vu sach thoi tap, nghien cuu toan ((hoc nganh) OR (hoc nhanh)) nong hoc xa hoi va phan van*.