Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
theo chieu » theo tieu, ho chieu, thi chieu
cong ngang » cong nhan, cong quang, cong nong
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong lang » cong vang, cong luong, cong quang
theo chu » cho chu, chao chu, theo yeu
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 chieu) or (theo chu)) tinh - hanh trinh cua nhung ((cong ngang) OR (cong lang)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) tinh - hanh trinh cua nhung ((cong ngang) OR (cong lang)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo chu)) tinh - hanh trinh cua nhung ((cong ngang) OR (cong lang)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) tinh - hanh trinh cua nhung ((cong ngang) OR (cong lang)) toan ban*.