Perhaps you should try some spelling variations:
chieu lang » chieu sang, hieu lang, chi lang
thanh tung » thanh cong
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
tung nam » trung nam, sung nam, dung nam
nam hang » nam thang, nam khang, nam dang
toan cao » toan tap
toan ban » van ban

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 lang - thanh tung nam hang cong trinh ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu lang - thanh tung nam hang cong trinh ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu lang - thanh tung nam hang cong trinh ((toan cao) or (toan ban))*.