Perhaps you should try some spelling variations:
trinh chuan » trinh han, trinh quan, trinh luan
hanh trinh » canh tranh, hanh chinh
chuan dung » chan dung, chuyen dung, chua dong
tieu tinh » trieu tinh, tieu trinh, lieu tinh
dung cong » dung trong
tan toan » tan tran, tap toan, van toan
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu tinh - hanh trinh chuan dung cong ((tan toan) or (van tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - hanh trinh chuan dung cong ((tan toan) OR (van tuan)) tap.
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - hanh trinh chuan dung cong ((tan toan) or (van tuan)) tap*.