Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chieu xanh » chieu sach, chieu sang, chieu tinh
quan trong » gian trong
thanh toan » thanh hoa, thanh san, tinh toan
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tang » anh tang, hanh mang, hanh tung
tac toan » tap toan, tam toan, hach toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - ((hanh tang) OR (hanh trang)) quan trong cong ((tac toan) or (thanh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - ((hanh tang) OR (hanh trang)) quan trong cong ((tac toan) OR (thanh toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - ((hanh tang) OR (hanh trang)) quan trong cong ((tac toan) or (thanh toan)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - ((hanh tang) OR (hanh trang)) quan trong cong ((tac toan) or (thanh toan)) cao*.