Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thi nang » thi cong, ki nang
hanh tai » thanh tai, hang tai, han tai
thi hanh » thi thanh
cham xuc » cam xuc, chat xuc, cham soc
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va

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 ((thi nang) OR (thi hanh)) xa hoi. hieu ve cham xuc va ((hanh tai) or (hang va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((thi nang) OR (thi hanh)) xa hoi. hieu ve cham xuc va ((hanh tai) OR (hang va)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((thi nang) OR (thi hanh)) xa hoi. hieu ve cham xuc va ((hanh tai) or (hang va)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ((thi nang) OR (thi hanh)) xa hoi. hieu ve cham xuc va ((hanh tai) or (hang va)) cuu tre*.