Perhaps you should try some spelling variations:
phuong dan » phuong danh, phuong doan, huong dan
hanh trinh » canh tranh, hanh chinh
hien hanh » dieu hanh
trinh cua » tinh cua, trinh luat, trinh quan
va phuong » va thuong, cac phuong
dan toan » van toan, dan than, manh toan
toan ban » van ban
cua va » cua vat, chua va, cua van

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 cua va phuong dan toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - hanh trinh cua va phuong dan toan ban*.