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 cong » dung trong
theo chu » theo chieu, cho chu, chao chu
dan phan » doan phan, van phan, dam phan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hien) or (theo chu)) xanh - hanh trinh thuat dung cong ((dan phan) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (theo chu)) xanh - hanh trinh thuat dung cong ((dan phan) OR (dan chan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (theo chu)) xanh - hanh trinh thuat dung cong ((dan phan) or (dan chan)) cau*.