Perhaps you should try some spelling variations:
chao truong » cho truong, cao truong, cac truong
hanh trinh » canh tranh, hanh chinh
trinh chao » trinh chat, trinh han, trinh co
truong con » truong cong, truong son, truong ton
khi hanh » thi hanh, chi hanh, chi nhanh
toan tap » toan ban
con tan » cong tan, con than, con tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi khi hanh - hanh trinh chao truong con tan ((van ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi khi hanh - hanh trinh chao truong con tan ((van ban) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doi khi hanh - hanh trinh chao truong con tan ((van ban) or (toan tap))*.