Perhaps you should try some spelling variations:
thuc day » thuc dan
vu sach » vu bach, su sach, vu khach
xay hoi » xa hoi, tay hoi, cay phoi
hieu le » hieu ve, hieu he, hieu ly
hanh di » hanh vi, hanh de, hang di
ca viet » va viet, co viet, hoa viet
y van » ly van, ty van, _ van
le va » le van, te va, ly va
di ca » di cau, di cua, doi ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y van xay hoi. hieu le va ((thuc day) OR (thuc vat)) hanh di ca viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y van xay hoi. hieu le va ((thuc day) OR (thuc vat)) hanh di ca viet".
• Adding a wildcard symbol may retrieve word variants: vu sach y van xay hoi. hieu le va ((thuc day) OR (thuc vat)) hanh di ca viet*.