Perhaps you should try some spelling variations:
luong cong » dung cong, trong cong, tong cong
trinh toan » tinh toan, thanh toan, trinh han
hoc thieu » toc thieu
cong cong » cong dong, trong cong, dung cong
anh tang » anh bang, anh dang, anh sang
anh nang » ganh nang, anh bang, anh dang
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (hoc hien)) xanh - ((anh tang) OR (anh nang)) luong cong cong trinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - ((anh tang) OR (anh nang)) luong cong cong trinh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - ((anh tang) OR (anh nang)) luong cong cong trinh toan tap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - ((anh tang) OR (anh nang)) luong cong cong trinh toan tap*.