Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
hieu va » lieu va, hieu qua
xanh di » danh di, vanh dai, xanh tai
xa xanh » xa thanh, cay xanh, mau xanh
thuc xa » thuc xay, tuc xa, thuc va
va nham » va cham, va tham, va nha
su sach » so sach, vu sach
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
sach v » sach va, sach y, sach 2
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 ((nang ma) OR (sang ma)) hoi. hieu va nham thuc xa xanh di cua su~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach v ((nang ma) OR (sang ma)) hoi. hieu va nham thuc xa xanh di cua su".
• Adding a wildcard symbol may retrieve word variants: su sach v ((nang ma) OR (sang ma)) hoi. hieu va nham thuc xa xanh di cua su*.