Perhaps you should try some spelling variations:
thien van » thi van
thanh doi » thanh loi, thanh moi, thanh do
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
ty nang » ky nang, ty hang, ly nang
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh ((ty nang) or (ty xang)) xa hoi. thien van nam thuc va thanh doi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh ((ty nang) OR (ty xang)) xa hoi. thien van nam thuc va thanh doi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh ((ty nang) or (ty xang)) xa hoi. thien van nam thuc va thanh doi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: hoc sinh ((ty nang) or (ty xang)) xa hoi. thien van nam thuc va thanh doi ((cua tre) OR (cuu tre))*.