Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
tieu trinh » tien trinh, trieu tinh, lieu tinh
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
toan tai » doanh tai, toan ban, toan cao
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tieu trinh) OR (tien thinh)) - hanh trinh cua nhung huong dan ((toan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tieu trinh) OR (tien thinh)) - hanh trinh cua nhung huong dan ((toan tai) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((tieu trinh) OR (tien thinh)) - hanh trinh cua nhung huong dan ((toan tai) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc ((tieu trinh) OR (tien thinh)) - hanh trinh cua nhung huong dan ((toan tai) or (toan tap))*.