Perhaps you should try some spelling variations:
phuong danh » phuong anh, phuong dinh, phuong hanh
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
luan nhung » luan chung, luan hung, quan nhung
phuong dan » phuong doan, huong dan, phuong lan
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: ho ((chieu sang) or (chinh sach)) - hanh trinh luan nhung ((phuong dan) OR (phuong danh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chinh sach)) - hanh trinh luan nhung ((phuong dan) OR (phuong danh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chinh sach)) - hanh trinh luan nhung ((phuong dan) OR (phuong danh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chinh sach)) - hanh trinh luan nhung ((phuong dan) OR (phuong danh)) toan tap*.