Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc chieu » hoc thieu, hoc hien, hoc dieu
luat cong » thuat cong, luat chung, cua cong
cong cong » cong dong, trong cong, dung cong
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
san toan » van toan, dan toan, xuan 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) or (ho chieu)) xanh - hanh trinh luat cong cong ((san toan) OR (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (ho chieu)) xanh - hanh trinh luat cong cong ((san toan) OR (manh toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (ho chieu)) xanh - hanh trinh luat cong cong ((san toan) OR (manh toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (ho chieu)) xanh - hanh trinh luat cong cong ((san toan) OR (manh toan)) cao*.