Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
va pham » van pham, va phat, va phap
duc van » duc va, duc tan, duc manh
van anh » van thanh, tuan anh, van minh
cuu tre » cua tre, cau tren, cau treo
anh vi » hanh vi, anh va, anh ve

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 ((ky tang) OR (ky dang)) xa hoi. lieu va pham duc van anh vi ((cua vat) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky tang) OR (ky dang)) xa hoi. lieu va pham duc van anh vi ((cua vat) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky tang) OR (ky dang)) xa hoi. lieu va pham duc van anh vi ((cua vat) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky tang) OR (ky dang)) xa hoi. lieu va pham duc van anh vi ((cua vat) or (cuu tre))*.