Perhaps you should try some spelling variations:
ngan phuong » doan phuong, van phuong, dan phuong
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh trinh » canh tranh, hanh chinh
phuong dan » phuong danh, phuong doan, huong dan
trinh cua » tinh cua, trinh luat, trinh quan
cua ngan » cua ban, vu ngan, cua dan

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

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