Perhaps you should try some spelling variations:
thien van » thi van
cau tren » cu tren, dau tren, ca tren
thanh va » thanh van, hanh va, thanh ha
thanh ve » hanh ve, thanh vien, thanh van
tham soc » cham soc, tham nuoc, thai son
sach ky » sac ky, sach y, sach ty
soc ban » hoc ban, coc ban, so ban
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
te sach » toc sach

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 lang xa hoi. ((lieu va) or (thien van)) tham soc ban ((thanh ve) OR (thanh va)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. ((lieu va) OR (thien van)) tham soc ban ((thanh ve) OR (thanh va)) cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. ((lieu va) or (thien van)) tham soc ban ((thanh ve) OR (thanh va)) cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. ((lieu va) or (thien van)) tham soc ban ((thanh ve) OR (thanh va)) cau tren*.