Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » tinh cua, trinh luat, trinh quan
bang song » nang song
cua bang » chua bang, cua ban, cua dang
van tuan » van quan, 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 hieu lang - hanh trinh cua bang song ((((tinh toan) or (anh tuan))) or (van tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh trinh cua bang song ((((tinh toan) OR (anh tuan))) OR (van tuan)) ban.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh trinh cua bang song ((((tinh toan) or (anh tuan))) or (van tuan)) ban*.