Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
va thanh » gia thanh, ban thanh, va tinh
chon loc » cho hoc
sach ly » sach y, sach ty, sach hay
hieu va » lieu va, hieu qua
va chon » va chong, va con, va chan
lang xa » lang ha, dang xay, lang van
sach lo » sach dao, sach doi, sach hoi
loc va » hoc va, luc va
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ly) or (sach lo)) lang xa hoi. hieu va chon loc va thanh di ((cua tu) OR (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ly) OR (sach lo)) lang xa hoi. hieu va chon loc va thanh di ((cua tu) OR (cua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ly) or (sach lo)) lang xa hoi. hieu va chon loc va thanh di ((cua tu) OR (cua su))".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ly) or (sach lo)) lang xa hoi. hieu va chon loc va thanh di ((cua tu) OR (cua su))*.