Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
van thanh » ban thanh, van tuan
chu tre » cho tre, chu tri, cuu tre
cam duc » cam xuc, cao duc, pham duc
ky sang » ky nang, ky tang, duy sang
hai chu » hai chau, hoi chu, hai chi
ky dang » ky nang, ky danh
hieu ve » hieu van
hieu va » lieu va, hieu qua
duc van » duc va, duc tan, duc manh
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ((ky sang) or (ky dang)) xa hoi. ((hieu ve) OR (hieu va)) cam duc van thanh hai chu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky sang) OR (ky dang)) xa hoi. ((hieu ve) OR (hieu va)) cam duc van thanh hai chu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky sang) or (ky dang)) xa hoi. ((hieu ve) OR (hieu va)) cam duc van thanh hai chu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky sang) or (ky dang)) xa hoi. ((hieu ve) OR (hieu va)) cam duc van thanh hai chu tre*.