Perhaps you should try some spelling variations:
thanh ven » thanh vien, thanh van, thanh nien
hoc sach » hoc sinh, hoc cac, hoc anh
cham duc » pham duc, cham soc, pham duy
thanh ve » hanh ve, thanh va, thanh vien
dang xay » dang van, van xay
hieu va » lieu va, hieu qua
va cham » va chat, va tham
lang xa » lang ha, lang van
sach o » sach lo, sac o, sach y
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: hoc sach o ((lang xa) OR (dang xay)) hoi. hieu va cham duc va ((thanh ve) or (thanh ven)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach o ((lang xa) OR (dang xay)) hoi. hieu va cham duc va ((thanh ve) OR (thanh ven)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach o ((lang xa) OR (dang xay)) hoi. hieu va cham duc va ((thanh ve) or (thanh ven)) cua te".
• Adding a wildcard symbol may retrieve word variants: hoc sach o ((lang xa) OR (dang xay)) hoi. hieu va cham duc va ((thanh ve) or (thanh ven)) cua te*.