Perhaps you should try some spelling variations:
muong sang » luong sang, muong bang, tuong sang
trung cap » truong cao, trung tam
chi sang » chi lang, chieu sang, chi chang
dung cua » dung luan, dung cho
cong san » cong tac
than cau » toan cau, phan cau, than cap
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 - thanh ((dung cua) or (trung cap)) nhung ((cong san) or (muong sang)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sang - thanh ((dung cua) OR (trung cap)) nhung ((cong san) OR (muong sang)) than cau.
• Adding a wildcard symbol may retrieve word variants: doi chi sang - thanh ((dung cua) or (trung cap)) nhung ((cong san) or (muong sang)) than cau*.