Perhaps you should try some spelling variations:
thuc day » thuc vat
thuc dan » thuc hanh, hoc dan, thuc vat
nang van » dang van, tang van, lang van
hieu van » hieu va, thien van, lieu va
tinh vi » trinh vi, tinh voi, tinh va
su sach » vu sach
van coc » van hoc, van loc, van co
so sach » so sanh, bo sach, co sach
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) ky nang van hoa. hieu van coc ((thuc day) or (thuc dan)) tinh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang van hoa. hieu van coc ((thuc day) OR (thuc dan)) tinh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky nang van hoa. hieu van coc ((thuc day) or (thuc dan)) tinh vi cuu tre*.