Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trang » thanh trung, minh trang, tinh trang
hanh trinh » hanh chinh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
qua dung » quang dung, su dung, qua song
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 thieu xanh - ((((hanh trang) OR (hanh trinh))) or (canh tranh)) qua dung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((((hanh trang) OR (hanh trinh))) OR (canh tranh)) qua dung cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((((hanh trang) OR (hanh trinh))) or (canh tranh)) qua dung cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((((hanh trang) OR (hanh trinh))) or (canh tranh)) qua dung cong tan toan cao*.