Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
ban thanh » ban hanh, ban hang
cham luc » cham soc, nhan luc, cham cuu
dua tren » dung tren
duy sang » duy van, duy can, duy anh
tu sach » thu sach, su sach, te sach
luc ban » duc ban, cuc ban, luc bat
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tao hoi » tao khoi, tao boi, tay hoi
ty sang » ty xang, ty hang, thu sang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ty sang) OR (duy sang)) tao hoi. hieu ve cham luc ban thanh lap ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty sang) OR (duy sang)) tao hoi. hieu ve cham luc ban thanh lap ((dua tren) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty sang) OR (duy sang)) tao hoi. hieu ve cham luc ban thanh lap ((dua tren) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty sang) OR (duy sang)) tao hoi. hieu ve cham luc ban thanh lap ((dua tren) or (cua te))*.