Perhaps you should try some spelling variations:
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
vang quan » van quan, nang quan, tang quan
chi sang » chi lang, chieu sang, chi chang
sinh cua » manh cua, dinh cuu, sinh va
quan cua » quan luan, ban cua, gian cua
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sang - hanh ((trinh cua) or (sinh cua)) dung cong vang quan cua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sang - hanh ((trinh cua) OR (sinh cua)) dung cong vang quan cua*.