Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
van thanh » ban thanh, van tuan
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
nuoc van » nuoc va, nuoc san, luoc van
cua tre » cua te, cua triet, dua tren
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
cuu tre » cau tren, cau treo
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, ma hoa, me hoi

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