Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
hanh doi » hanh noi, hang doi, hanh moi
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
ve dat » de dat, va dat, ve dao

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 y nang ma hoa. hieu ve dat (nuoc OR ngoc) va ((hanh doi) or (thanh doi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoa. hieu ve dat (nuoc OR ngoc) va ((hanh doi) OR (thanh doi)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoa. hieu ve dat (nuoc OR ngoc) va ((hanh doi) or (thanh doi)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoa. hieu ve dat (nuoc OR ngoc) va ((hanh doi) or (thanh doi)) cuu tre*.