Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh tai, thanh oai
thanh van » thanh san, thanh toan, thanh phan
duc manh » suc manh, duc anh, duc minh
ly quang » le quang, vu quang
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
cam duc » cam xuc, cao duc, pham duc
van cam » van nam, van lam, van cau
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ly quang) or (ty xang)) xa hoi. hieu van cam duc manh ((thanh vai) or (thanh van)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ly quang) OR (ty xang)) xa hoi. hieu van cam duc manh ((thanh vai) OR (thanh van)) cua tu.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ly quang) or (ty xang)) xa hoi. hieu van cam duc manh ((thanh vai) or (thanh van)) cua tu*.