Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
hieu va » lieu va, hieu qua
van anh » tuan anh, van minh
ca tren » cau tren, cu tren, la tren
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: te sach ky nang x hoi. ((hieu ve) or (hieu va)) cham soc ((van anh) OR (van thanh)) va ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. ((hieu ve) OR (hieu va)) cham soc ((van anh) OR (van thanh)) va ca tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. ((hieu ve) or (hieu va)) cham soc ((van anh) OR (van thanh)) va ca tren".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. ((hieu ve) or (hieu va)) cham soc ((van anh) OR (van thanh)) va ca tren*.