Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trong than hoc snippets" » "trong than code snippets", "trong thanh hoc snippets", "trong thuan hoc snippets", "trong tan hoc snippets", "trong toan hoc snippets", "trong thai hoc snippets", "trong than doc snippets"
"dung java java slippery" » "dung va java slippery", "dung java java slippers"

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

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