Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhanh bang » nhanh lang, nhanh mang, nhanh quang
dung cong » dung trong
chu sang » chu bang, thu sang, chuc nang
bang vat » bang va, dang vat, cang vat
vat dung » van dung, va dung, viet dung
cong rac » cong tac, cong cac, cong dac
thai cao » thoai cac, thuat cao, toan cao
tai cao » tao cao, tai sao, tai 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 ((chu sang) or (chieu sang)) - nhanh bang vat dung cong rac ((thai cao) OR (tai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sang) OR (chieu sang)) - nhanh bang vat dung cong rac ((thai cao) OR (tai cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu sang) or (chieu sang)) - nhanh bang vat dung cong rac ((thai cao) OR (tai cao))".
• Adding a wildcard symbol may retrieve word variants: theo ((chu sang) or (chieu sang)) - nhanh bang vat dung cong rac ((thai cao) OR (tai cao))*.