Perhaps you should try some spelling variations:
"locating bung code snippets" » "locating bug code snippets"
"using java code snippets" » "using data code snippets"
"van thang doc snippets" » "van thanh doc snippets", "van khang doc snippets", "van hang doc snippets", "van than doc snippets", "van thang nhoc snippets", "van nang doc snippets"

Try widening your search to All Fields.

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 code snippets") or ("van thang doc snippets"))) or ("locating bung code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("van thang doc snippets"))) OR ("locating bung code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( van thang doc snippets ))) or ( locating bung code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("van thang doc snippets"))) or ("locating bung code snippets"))*.