Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
duy gia » duy gian, quy gia, duy nghia
duc gia » quoc gia
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.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach _ nang ma hoi. hieu va phat ((duy gia) OR (duc gia)) thanh dai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach _ nang ma hoi. hieu va phat ((duy gia) OR (duc gia)) thanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: te sach _ nang ma hoi. hieu va phat ((duy gia) OR (duc gia)) thanh dai cua te*.