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