Perhaps you should try some spelling variations:
zhi parents » his parents, ii parents, lz's parents
parents sea » barents sea, parents self, parents send
sea mining » a mining
long du » long d, long do, long run
yan zhi » yan zi, wang zhi
congo a » congo _, congo 1, congo 2
du yan » du yang, mu yan, xu yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: long du yan zhi parents sea mining ((hoang vu) OR (congo a)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "long du yan zhi parents sea mining ((hoang vu) OR (congo a)) ;".
• Adding a wildcard symbol may retrieve word variants: long du yan zhi parents sea mining ((hoang vu) OR (congo a)) ;*.