Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang
nhiet nang » nhiet dong, viet nang, thien nang
thong cong » trong cong, tong cong, thong thong
trinh toan » tinh toan, thanh toan, trinh han
hoang van » hang va
dang van » hang va
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((nhieu tang) OR (nhiet nang)) - hanh ((hoang van) or (dang van)) thong cong trinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((nhieu tang) OR (nhiet nang)) - hanh ((hoang van) OR (dang van)) thong cong trinh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((nhieu tang) OR (nhiet nang)) - hanh ((hoang van) or (dang van)) thong cong trinh toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((nhieu tang) OR (nhiet nang)) - hanh ((hoang van) or (dang van)) thong cong trinh toan cao*.