Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
nhanh manh » nhanh mang, nhanh thanh, nhanh tinh
trinh toan » tinh toan, thanh toan, trinh han
hieu lang » chieu sang, nhieu tang, hieu van
hang cong » dang cong, hang nong, bang cong
manh cua » doanh cua, ban cua
cua hang » cua dang, cua nhung, cua cong
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) OR (hieu quang)) - nhanh manh cua hang cong trinh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) OR (hieu quang)) - nhanh manh cua hang cong trinh toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) OR (hieu quang)) - nhanh manh cua hang cong trinh toan tap*.