Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
duong manh » duong van
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
trinh han » trinh quan
manh toan » thanh toan, anh tuan, tinh toan
trinh va » trinh van, trinh vat, trinh ve
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: theo hieu lang - hanh ((((trinh va) or (trinh han))) or (sinh vat)) nhung duong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh ((((trinh va) OR (trinh han))) OR (sinh vat)) nhung duong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh ((((trinh va) or (trinh han))) or (sinh vat)) nhung duong manh toan ban*.