Perhaps you should try some spelling variations:
thanh de » hanh de, thanh ve, thanh do
thanh di » thanh doi, thanh do, thanh dinh
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
sach ly » sach y, sach lo, sach hay
cam duc » cam xuc, cao duc, pham duc
va cam » va cham, va cac, va cao
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: thuoc ((sach ly) OR (sach ty)) lang xa hoi. hieu va cam duc va ((thanh di) or (thanh de)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((sach ly) OR (sach ty)) lang xa hoi. hieu va cam duc va ((thanh di) OR (thanh de)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc ((sach ly) OR (sach ty)) lang xa hoi. hieu va cam duc va ((thanh di) or (thanh de)) cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc ((sach ly) OR (sach ty)) lang xa hoi. hieu va cam duc va ((thanh di) or (thanh de)) cua te*.