Perhaps you should try some spelling variations:
trinh chuan » trinh han, trinh quan, trinh luan
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » canh tranh, hanh chinh
chuan nang » chua nang, chuan trang, chuc nang
cong van » cong vang, song van, cong tan
cong san » cong tac
toan tap » toan 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 tinh - hanh trinh chuan nang ((cong van) OR (cong san)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu tinh - hanh trinh chuan nang ((cong van) OR (cong san)) toan tap".
• Adding a wildcard symbol may retrieve word variants: theo chieu tinh - hanh trinh chuan nang ((cong van) OR (cong san)) toan tap*.