Perhaps you should try some spelling variations:
dinh luong » dinh duong, dinh huong, dinh cuong
luong cong » dung cong, trong cong, tong cong
hoc thieu » toc thieu, hoc hien
canh dinh » canh tinh, anh dinh, canh binh
cong cong » cong dong, trong cong, dung cong
doc hieu » toc thieu, hoc hien
hoa cao » hoa co, hoa cac, hoa bao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc thieu)) sang - canh dinh luong cong cong trinh ((hoa cao) or (hoc cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) sang - canh dinh luong cong cong trinh ((hoa cao) OR (hoc cao)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc thieu)) sang - canh dinh luong cong cong trinh ((hoa cao) or (hoc cao))*.