Perhaps you should try some spelling variations:
thien van » thi van
dau tren » dau tien, dat tren, dau tieng
thanh ve » hanh ve, thanh va, thanh vien
hieu van » hieu va, lieu va, hieu ve
thanh vi » hanh vi, thanh va, nhanh vi
te sach » toc sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
tham so » ham so, tham do, than so
so ban » sao ban, so bang, co ban

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