Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
thanh lap » thanh san, phan lap, thanh hai
ho chieu » theo chieu, hoc thieu, doi chieu
tuong va » truong va, thuong va, luong va
than cap » khan cap, thanh cac, than cua

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 - thanh tuong va ((nhung cong) or (thong cong)) tan ((than cap) OR (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh tuong va ((nhung cong) OR (thong cong)) tan ((than cap) OR (thanh lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh tuong va ((nhung cong) or (thong cong)) tan ((than cap) OR (thanh lap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh tuong va ((nhung cong) or (thong cong)) tan ((than cap) OR (thanh lap))*.