Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doc lieu voi snippets" » "doc lieu code snippets", "duoc lieu voi snippets", "doc hieu voi snippets", "du lieu voi snippets", "doc lieu boi snippets", "doc lieu va snippets", "doc lieu hoc snippets"
"python using java snippets" » "python using data 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: (((("doc lieu voi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc lieu voi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doc lieu voi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc lieu voi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.