Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
thanh vi » hanh vi, thanh va, thanh ve
thuc day » thuc dan, thuc vat
can thuc » dan thuc, van thuc, cay thuc
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
te sach » toc sach
ve can » ve canh, ve cac, ve ban
vi cua » vai cua, di cua
cua te » cua tu

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 (te sach)) ((ky lang) OR (ky dang)) xa hoi. hieu ve can thuc day thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ((ky lang) OR (ky dang)) xa hoi. hieu ve can thuc day thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (te sach)) ((ky lang) OR (ky dang)) xa hoi. hieu ve can thuc day thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ((ky lang) OR (ky dang)) xa hoi. hieu ve can thuc day thanh vi cua te*.