Perhaps you should try some spelling variations:
thanh vinh » thanh binh, thanh tinh, than kinh
hanh vinh » khanh vinh, hanh tinh, anh vinh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
xuc va » duc va, tuc va, luc va
ve cac » va cac, vien cac

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