Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
sach moi » sach doi, sach hoi, bach mai
thuoc va » thuc va, thuoc ma, thuong va
te sach » toc sach
moi tap » moi tai, toi tap
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
nhan va » nhan tai, nhan dan, nhan tao
va hoi » xa hoi, va hoc, va hoa
hoi ca » hoi cua, hoi cac, hoi cau

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

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