Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chiet tach » chieu sach
thong cong » trong cong, tong cong, thong thong
hanh mang » nhanh mang, nhanh lang, thanh hang
cong vang » cong lang, cong quang, cong ngang
ho chiet » ho chieu, ho thiet, hoc thiet
va thong » va thuong, va phuong, he thong
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - ((hanh mang) or (hanh trang)) va thong cong vang ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - ((hanh mang) OR (hanh trang)) va thong cong vang ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - ((hanh mang) or (hanh trang)) va thong cong vang ((toan cao) or (toan ban))*.