Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hanh tranh » canh tranh, hanh trinh, hanh trang
tong duong » tuong duong, thong duong, dong duong
duong sach » duong manh
trinh chao » trinh chat, trinh han, trinh co
tranh cua » doanh cua, manh cua
cua tong » cua cong, cua dong, cua nong
chat » nhat, phat

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu manh - hanh tranh cua tong duong sach ((trinh chao) or (tinh chat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu manh - hanh tranh cua tong duong sach ((trinh chao) OR (tinh chat)).
• Adding a wildcard symbol may retrieve word variants: toc thieu manh - hanh tranh cua tong duong sach ((trinh chao) or (tinh chat))*.