Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
su sach » so sach
va cham » va chat, va tham
vu sach » vu bach, vu khach
xanh di » danh di, vanh dai, xanh tai
xa xanh » xa thanh, cay xanh, mau xanh
thuc xa » thuc xay, tuc xa, thuc va
di cua » dai cua, doi cua, de cua
cua su » qua su
ma hoi » mai hoi, xa hoi, me hoi
y nang » ky nang, ly nang, v nang

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 (vu sach)) y nang ((ma hoi) or (ma hoa)). lieu va cham thuc xa xanh di cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang ((ma hoi) OR (ma hoa)). lieu va cham thuc xa xanh di cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) y nang ((ma hoi) or (ma hoa)). lieu va cham thuc xa xanh di cua su".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) y nang ((ma hoi) or (ma hoa)). lieu va cham thuc xa xanh di cua su*.