Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"voi hoc quan snippets" » "voi hoc dan snippets", "voi tac quan snippets", "voi hoc phan snippets", "hoi hoc quan snippets", "vi hoc quan snippets", "voi ho quan snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("voi hoc quan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"voi hoc quan snippets\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( voi hoc quan snippets ) OR ( python using java snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi hoc quan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))*.