Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hoc sach » hoc sinh, hoc cac, hoc anh
lang van » dang van, tang van, hoang van
va thanh » gia thanh, va tinh, le thanh
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay
va cam » va cham, va cac, va cao
va cua » va chua, via cua, ca cua
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 y ((lang xa) OR (lang van)) hoi. hieu va cam duc ((va thanh) or (ban thanh)) va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y ((lang xa) OR (lang van)) hoi. hieu va cam duc ((va thanh) OR (ban thanh)) va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y ((lang xa) OR (lang van)) hoi. hieu va cam duc ((va thanh) or (ban thanh)) va cua te".
• Adding a wildcard symbol may retrieve word variants: hoc sach y ((lang xa) OR (lang van)) hoi. hieu va cam duc ((va thanh) or (ban thanh)) va cua te*.