Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trang » canh tranh, hanh trinh, minh trang
trinh toan » tinh toan, thanh toan, trinh han
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
van dung » van dong, xay dung, tin dung
toan cao » toan ban, toan tap

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 (theo chu)) xanh - ((hanh trang) OR (thanh trung)) van dung cong trinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chu)) xanh - ((hanh trang) OR (thanh trung)) van dung cong trinh toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (theo chu)) xanh - ((hanh trang) OR (thanh trung)) van dung cong trinh toan cao*".