Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
nang cong » dang cong, bang cong, hang cong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
toan cao » toan tap
toan ban » van ban

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

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