Perhaps you should try some spelling variations:
nho khong » khoi khong, khon khong, nghe khong
khong hoc » khung hoc, thong hoc, khong thuoc
thu sach » tu sach, thuat sach, thuoc sach
phap van » pham van, phan van, phap han
hoi tai » hoi trac
hoc tai » hoc dai, hoc tap, hoc bai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc nho » hoc pho, hoc cho, hoc nha
va phap » va phat, ban 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: thu sach ((hoi tai) OR (hoc tai)), nghien cuu mon hoc nho khong hoc xa hoi va phap van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((hoi tai) OR (hoc tai)), nghien cuu mon hoc nho khong hoc xa hoi va phap van".
• Adding a wildcard symbol may retrieve word variants: thu sach ((hoi tai) OR (hoc tai)), nghien cuu mon hoc nho khong hoc xa hoi va phap van*.