Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
hieu manh » dieu hanh, hien hanh, hieu van
trinh cua » tinh cua, trinh luat, trinh quan
trong van » trong cac
cua dung » cua dang, cua dong, qua dung
van tan » van tuan, van ban, van tai
tan tat » ban tat, toan tap, toan tai

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

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