Perhaps you should try some spelling variations:
manh thanh » danh thanh, minh thanh, manh thang
thanh tai » thanh hai, thanh toan, doanh tai
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
cao suc » cao su, cao duc
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
y nang » ky nang, ly nang, v nang

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. ((hieu ve) or (hieu van)) cao suc manh thanh tai ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. ((hieu ve) OR (hieu van)) cao suc manh thanh tai ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. ((hieu ve) or (hieu van)) cao suc manh thanh tai ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. ((hieu ve) or (hieu van)) cao suc manh thanh tai ((cuu tre) OR (cua tre))*.