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
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
bai toan » bai tap
van tai » von tai, van tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (hoc thieu)) xanh - hanh trinh thuat dung cong ((bai toan) or (van tai)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) xanh - hanh trinh thuat dung cong ((bai toan) OR (van tai)) cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) xanh - hanh trinh thuat dung cong ((bai toan) or (van tai)) cau*.