Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chua xang » chua nang, chu bang, chua dong
hanh hang » thanh hang, hanh han, hanh mang
hang hang » nang hang, cang thang, hung thang
cua nhung » va nhung
cong tinh » cong trinh, cong vinh, long tinh
toan cao » toan ban, toan tap
chuc » thuc, chu, phuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chua xang) OR (chuc nang)) - ((hanh hang) or (hang hang)) cua nhung cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua xang) OR (chuc nang)) - ((hanh hang) OR (hang hang)) cua nhung cong tinh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua xang) OR (chuc nang)) - ((hanh hang) or (hang hang)) cua nhung cong tinh toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chua xang) OR (chuc nang)) - ((hanh hang) or (hang hang)) cua nhung cong tinh toan cao*.