Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh vien, thanh van
thanh va » thanh van, hanh va, thanh ha
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
hieu ve » hieu va, hieu van
xuc gia » duc gia, luc gia, tuc gia
ve cam » ve cham, ve cac, va cam
o hoi » co hoi, o hoc, o hai

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) or (ty xang)) o hoi. hieu ve cam xuc gia ((thanh ve) OR (thanh va)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky nang) OR (ty xang)) o hoi. hieu ve cam xuc gia ((thanh ve) OR (thanh va)) cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky nang) or (ty xang)) o hoi. hieu ve cam xuc gia ((thanh ve) OR (thanh va)) cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky nang) or (ty xang)) o hoi. hieu ve cam xuc gia ((thanh ve) OR (thanh va)) cau tren*.