Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
lang huong » lan huong, lang muong, lang tuong
hien hanh » dieu hanh
trinh do » trinh ky
dan toan » van toan, dan than, manh toan
toan ban » van ban
do lang » o lang, do dang, do tang

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 - hanh trinh do lang huong dan toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - hanh trinh do lang huong dan toan ban*.