Perhaps you should try some spelling variations:
thue nang » thien nang, thuat nang, chuc nang
thu sach » tu sach, thuat sach, thuoc sach
thi nang » thi cong, ki nang, thi hanh
cao duc » dao duc, cao suc, giao duc
hanh va » hang va
chu tre » cho tre, chu tri, cuu tre
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((thue nang) OR (thi nang)) xa hoi. lieu va cao duc va ((hanh va) or (hanh vi)) chu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((thue nang) OR (thi nang)) xa hoi. lieu va cao duc va ((hanh va) OR (hanh vi)) chu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((thue nang) OR (thi nang)) xa hoi. lieu va cao duc va ((hanh va) or (hanh vi)) chu tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ((thue nang) OR (thi nang)) xa hoi. lieu va cao duc va ((hanh va) or (hanh vi)) chu tre*.