Perhaps you should try some spelling variations:
tieu sang » chieu sang, tieu dung, tiem nang
dung cong » dung trong
cong bang » cuong bang, dong bang, hong bang
bang than » bang thanh, ban than, sang than
tranh va » tranh van, trang va, thanh va
trinh va » trinh van, trinh vat, trinh ve
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sang - canh ((tranh va) OR (trinh va)) dung cong bang than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sang - canh ((tranh va) OR (trinh va)) dung cong bang than cap".
• Adding a wildcard symbol may retrieve word variants: theo tieu sang - canh ((tranh va) OR (trinh va)) dung cong bang than cap*.