Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh thiet, trinh thuc
hanh trinh » canh tranh, hanh chinh
thuat dung » thuat hung, thuat ung, thuat xung
dung huong » dung thuong, dung phuong, dong huong
manh toan » thanh toan, anh tuan, tinh toan
tri tinh » tri kinh, trieu tinh, thai tinh
dan toan » van toan, dan than, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: mot tri tinh - hanh trinh thuat dung huong ((dan toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mot tri tinh - hanh trinh thuat dung huong ((dan toan) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: mot tri tinh - hanh trinh thuat dung huong ((dan toan) or (manh toan)) cau*.