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
phan cac » nhan cach, phan dau, phan lap
toan cau » toan cao, toan ban, toan tap

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 ((phan cac) or (toan cau))~.
• 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 ((phan cac) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sang)) - hanh trinh cua ngan phuong dan ((phan cac) or (toan cau))*.