Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
hien xanh » hien nhanh, chieu xanh, hien khanh
hien hanh » dieu hanh
trinh va » trinh van, trinh vat, trinh ve
va trong » va truong, va thong, va tuong
cong van » cong vang, cong san, song van
van quan » van ban
quan ha » quan he

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (hien hanh)) - canh trinh va trong cong van quan ha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien hanh)) - canh trinh va trong cong van quan ha.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien hanh)) - canh trinh va trong cong van quan ha*.