Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
doi cua » dai cua, hoi cua, dong cua
sach ty » sach y, sach tu, sach thu
hieu va » lieu va
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
soc va » hoc va, loc va, doc va
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: te sach ty ((nang xa) or (nang ma)) hoi. ((hieu va) OR (hieu qua)) cham soc va thanh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (nang ma)) hoi. ((hieu va) OR (hieu qua)) cham soc va thanh doi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang xa) or (nang ma)) hoi. ((hieu va) OR (hieu qua)) cham soc va thanh doi cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (nang ma)) hoi. ((hieu va) OR (hieu qua)) cham soc va thanh doi cua te*.