Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
trinh han » trinh quan
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tranh cua
cong san » cong tac
san toan » van toan, dan toan, manh toan
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: ho chieu sang - hanh ((((tinh cua) OR (tinh chat))) or (trinh han)) nhung cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh ((((tinh cua) OR (tinh chat))) OR (trinh han)) nhung cong san toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh ((((tinh cua) OR (tinh chat))) or (trinh han)) nhung cong san toan cao*".