Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
lang huong » lan huong, lang muong, lang tuong
trinh van » trinh han, trinh quan, trinh toan
huong van » huong dan, duong van, hong van
van lang » van nang, va lang, van hang
van toan » van tuan, van tan, van thanh
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 ((hien hanh) or (dieu hanh)) - hanh trinh van lang huong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (dieu hanh)) - hanh trinh van lang huong van toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (dieu hanh)) - hanh trinh van lang huong van toan cao*.