Perhaps you should try some spelling variations:
sieu viet » su viet, dien viet, viet viet
bien viet » dien viet, tieng viet, trien viet
cau treo » cau theo, cau tren, cau triet
van anh » van thanh, tuan anh, van minh
cuu tre » cua tre, cau tren
anh vai » anh va, anh bai, anh van
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
co van » cao van, vo van, so van
y nang » ky nang, ly nang, v nang
cac co » cac cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. ((sieu viet) OR (bien viet)) cac co van anh vai ((cuu tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. ((sieu viet) OR (bien viet)) cac co van anh vai ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. ((sieu viet) OR (bien viet)) cac co van anh vai ((cuu tre) or (cau treo))*".