Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
te sach » toc sach
sach ly » sach y, sach lo, sach ty
dat cua » dai cua, day cua, mat cua
cac dac » cac dan, cac dai, cac bac
cao duc » dao duc, cao suc, giao duc
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang ma hoi. ((hieu ve) OR (hieu va)) ((cao duc) OR (cac dac)) gia thanh dat cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang ma hoi. ((hieu ve) OR (hieu va)) ((cao duc) or (cac dac)) gia thanh dat cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang ma hoi. ((hieu ve) OR (hieu va)) ((cao duc) or (cac dac)) gia thanh dat cua te*.