Perhaps you should try some spelling variations:
phap chong » phap phong, phap cong, pham hong
chong hoc » chung hoc, chong doc, thong hoc
sach hoc » cach hoc, sach hoi, mach hoc
cuu cong » cua cong, thu cong, cac cong
hoc phap » hoc phan, hoc phat, hoc pho
nhan tao » nhan tai, nhan dan
tu sach » thu sach, su sach, te sach
va nhan » van nhan, ca nhan, va phan
hoc xa » hoc ma
tinh » trinh, dinh, minh

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 hoc tap, nghien ((cuu tinh) or (cuu cong)) hoc phap chong hoc xa hoi va nhan tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien ((cuu tinh) OR (cuu cong)) hoc phap chong hoc xa hoi va nhan tao.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien ((cuu tinh) or (cuu cong)) hoc phap chong hoc xa hoi va nhan tao*.