Perhaps you should try some spelling variations:
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
dang xay » dang van, van xay
te sach » toc sach
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
sach ky » sac ky, sach y, sach ty
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
tuc va » thuc va, truc va, tuc xa

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 ky dang xay hoi. hieu ve chat ((tuc va) or (thuc vat)) hanh tinh ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xay hoi. hieu ve chat ((tuc va) OR (thuc vat)) hanh tinh ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang xay hoi. hieu ve chat ((tuc va) or (thuc vat)) hanh tinh ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xay hoi. hieu ve chat ((tuc va) or (thuc vat)) hanh tinh ((cua tre) OR (cuu tre))*.