Perhaps you should try some spelling variations:
truc ngan » tu ngan, tri ngan, truc nano
thu ngan » tu ngan, tai ngan, vu ngan
cau tren » dau tren, ca tren, cau treo
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cu tren » tu tren, dua tren
ve cau » ke cau, va cau, ve cac
hang » nang, dang, bang

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty lang xa hoi. hieu ve cau ((truc ngan) OR (thu ngan)) hang va ((cau tren) OR (cu tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty lang xa hoi. hieu ve cau ((truc ngan) OR (thu ngan)) hang va ((cau tren) or (cu tren))~".
• Adding a wildcard symbol may retrieve word variants: te sach ty lang xa hoi. hieu ve cau ((truc ngan) OR (thu ngan)) hang va ((cau tren) or (cu tren))*.