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 » thien van, lieu va
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam suc » cam xuc, cao suc, cham soc
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
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 va))) or (hieu van)) cam suc manh thanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. ((((hieu ve) OR (hieu va))) OR (hieu van)) cam suc manh thanh tai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. ((((hieu ve) OR (hieu va))) or (hieu van)) cam suc manh thanh tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. ((((hieu ve) OR (hieu va))) or (hieu van)) cam suc manh thanh tai cuu tre*.