Perhaps you should try some spelling variations:
trinh tran » trinh trang, trinh toan, trinh tren
hieu manh » chieu xanh, hieu nganh, dieu hanh
canh mang » cach mang, hanh mang, nhanh mang
hoc hieu » hoc thieu, hoc hien, doc hieu
cua nong » cua cong, cuu nong, cua dong
cua dang » cua cong, cua ban
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - canh mang ((cua nong) or (cua dang)) cong trinh tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh mang ((cua nong) OR (cua dang)) cong trinh tran cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh mang ((cua nong) or (cua dang)) cong trinh tran cau*.