Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu lang » chieu sang, hieu quang, nhieu tang
hoang van » hang va
dung cong » dung trong
trinh han » trinh quan
thang va » hang va, trang va, thong va
han ban » hang ban, van ban, can ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu xanh) or (hieu lang)) - hanh ((thang va) or (hoang van)) dung cong trinh han ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (hieu lang)) - hanh ((thang va) OR (hoang van)) dung cong trinh han ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (hieu lang)) - hanh ((thang va) or (hoang van)) dung cong trinh han ban*.