Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
cham xuc » cam xuc, chat xuc, cham soc
tu sach » su sach, te sach, tu cach
hieu va » lieu va, hieu qua
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, xuc ban
ca tren » cau tren, cu tren, la tren
hieu ve » hieu van
anh va » hanh va
x hoi » xa hoi, o hoi, x ho
va ca » va cac, va cao, va cai

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) OR (thu sach)) ky nang x hoi. ((hieu ve) or (hieu va)) cham xuc van anh va ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang x hoi. ((hieu ve) OR (hieu va)) cham xuc van anh va ca tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky nang x hoi. ((hieu ve) or (hieu va)) cham xuc van anh va ca tren".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky nang x hoi. ((hieu ve) or (hieu va)) cham xuc van anh va ca tren*.