Perhaps you should try some spelling variations:
tinh diem » tinh dien, dinh diem, tinh dieu
cau tren » cu tren, ca tren, cau treo
dau tren » dau tien, dat tren, dau tieng
nang xa » nang x, lang xa, nang ma
va cham » va chat
va tham » van tham, va thanh, va thuat
va tinh » may tinh
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang xa hoi. hieu ((va cham) or (va tham)) duc va tinh diem ((cau tren) OR (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang xa hoi. hieu ((va cham) OR (va tham)) duc va tinh diem ((cau tren) OR (dau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang xa hoi. hieu ((va cham) or (va tham)) duc va tinh diem ((cau tren) OR (dau tren))".
• Adding a wildcard symbol may retrieve word variants: tu san ky nang xa hoi. hieu ((va cham) or (va tham)) duc va tinh diem ((cau tren) OR (dau tren))*.