Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh dap » trinh lap, trinh da, trinh dan
dap nhung » vap nhung, va nhung, dap ung
cong dan » cong san, cong tan, cong dong
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
ho lieu » so lieu, co lieu, ho kieu

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: ho lieu tinh - hanh trinh dap nhung ((cong dan) OR (huong dan)) ((toan cau) OR (toan cao))~.
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh trinh dap nhung ((cong dan) or (huong dan)) ((toan cau) or (toan cao))*.