Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
truong lao » truong cao, truong lam, truong bao
truong dao » truong dai, truong cao, truong bo
hien xanh » hien hanh, hien nhanh, hien khanh
dong cong » duong cong, dung cong, dang cong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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 ((hien xanh) or (chieu xanh)) - anh ((truong lao) OR (truong dao)) dong cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - anh ((truong lao) OR (truong dao)) dong cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (chieu xanh)) - anh ((truong lao) OR (truong dao)) dong cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu xanh)) - anh ((truong lao) OR (truong dao)) dong cong tan toan cao*.