Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, pham thuc
nham thu » nam thu, pham thu, nhan thuc
xanh di » danh di, vanh dai, xanh tai
xa xanh » xa thanh, cay xanh, mau xanh
tang ma » mang may, tang van
ma hoi » mai hoi, xa hoi, ma hoa
sach v » sach va, sach 2, sach vay
di cua » dai cua, doi cua, de cua
cua su » qua su

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