Perhaps you should try some spelling variations:
hang khoa » dung khoa
sach hoc » cach hoc, sach hoi, sach duoc
mach hoc » cach hoc, dich hoc, anh hoc
hoc hang » hoc hanh, hoc bang, hoc tang
khoa hoc » hoa hoc
chu tinh » chau tinh, chua tinh, cuu tinh
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
tinh va » tich va, trinh van, trinh vat
hoc xa » hoc ma
ho chu » hoi chu, cho chu, ho chua
xa ho » xa hoi, xa hoa, xa hoc

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) or (mach hoc)) tap, nghien cuu mot hoc hang khoa hoc xa ho chu tinh va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach hoc) OR (mach hoc)) tap, nghien cuu mot hoc hang khoa hoc xa ho chu tinh va.
• Adding a wildcard symbol may retrieve word variants: tu ((sach hoc) or (mach hoc)) tap, nghien cuu mot hoc hang khoa hoc xa ho chu tinh va*.