Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh chua » trinh chuan, trinh cua, trinh chu
tieu tinh » trieu tinh, tieu trinh, lieu tinh
chua dung » chua dong, thuat dung, chua nhung
dung cong » dung trong
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai 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 chua dung cong ((((tan toan) OR (tap toan))) or (van tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - hanh trinh chua dung cong ((((tan toan) OR (tap toan))) OR (van tuan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - hanh trinh chua dung cong ((((tan toan) OR (tap toan))) or (van tuan)) tap".
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - hanh trinh chua dung cong ((((tan toan) OR (tap toan))) or (van tuan)) tap*.