Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
hoc thieu » toc thieu, hoc hien
hanh tran » hanh trang, hanh tram, thanh trang
dung cong » dung trong
cong tinh » cong trinh, cong vinh, long tinh
theo chu » theo chieu, cho chu, chao chu
toan cao » toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chu)) xanh - ((hanh tran) OR (thanh tran)) tin dung cong tinh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (theo chu)) xanh - ((hanh tran) OR (thanh tran)) tin dung cong tinh toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo chu)) xanh - ((hanh tran) OR (thanh tran)) tin dung cong tinh toan cao*.