Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java java slippers" » "using data java slippers", "using java java slippery", "using java java grippers"
"van dung dat snippets" » "van dong dat snippets", "xay dung dat snippets", "tin dung dat snippets", "van dung va snippets", "van dung tai snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java java slippers") or ("van dung dat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java java slippers") OR ("van dung dat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java java slippers ) or ( van dung dat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java java slippers") or ("van dung dat snippets"))) or ("locating bug core snippets"))*.