Perhaps you should try some spelling variations:
lang hai » lang chai, lang thai, lang ha
te sach » toc sach
hai cua » thai cua, dai cua, hoi cua
va lang » hoa lang
va nang » van nang, da nang, cam nang
cao duc » dao duc, cao suc, giao duc
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
va cao » va cac, va co, va dao
cua te » cua tu
me hoi » le hoi
v nang » vu nang, van nang, voi nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((v nang) or (va nang)) ((me hoi) or (mai hoi)). hieu va cao duc va lang hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v nang) OR (va nang)) ((me hoi) OR (mai hoi)). hieu va cao duc va lang hai cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) or (va nang)) ((me hoi) or (mai hoi)). hieu va cao duc va lang hai cua te*.