Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
thien van » thi van
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hieu van » hieu va, lieu va, hieu ve
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van 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) or (((hieu van) OR (thien van)))) - canh tranh cua nhung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (((hieu van) OR (thien van)))) - canh tranh cua nhung cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (((hieu van) OR (thien van)))) - canh tranh cua nhung cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (((hieu van) OR (thien van)))) - canh tranh cua nhung cong tan toan cao*.