Perhaps you should try some spelling variations:
khien bang » phien ban, khien dong, khien vong
chieu sang » chieu sach, chieu xanh, hieu lang
dung phung » dung phuong, dung chung, dung nhung
hanh dang » hanh dong, anh dang, hanh dung
dang xay » dang van, van xay
van khan » van khanh, van khang, van phan
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((khien bang) OR (chieu sang)) - hanh dang xay dung phung van khan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((khien bang) OR (chieu sang)) - hanh dang xay dung phung van khan cap".
• Adding a wildcard symbol may retrieve word variants: theo ((khien bang) OR (chieu sang)) - hanh dang xay dung phung van khan cap*.