Perhaps you should try some spelling variations:
hanh vinh » thanh vinh, khanh vinh, anh vinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
hieu van » hieu va, thien van, lieu va
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
van cac » van hac, van cau, van bac
lang ha » long ha
tuc va » thuc va, truc va, tuc xa
y lang » o lang, _ lang, tay lang
ha hoi » hoa hoi, ha noi, xa hoi

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 lang ha hoi. hieu van cac ((tuc va) or (thuc vat)) ((hanh vinh) OR (hanh tinh)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang ha hoi. hieu van cac ((tuc va) OR (thuc vat)) ((hanh vinh) OR (hanh tinh)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y lang ha hoi. hieu van cac ((tuc va) or (thuc vat)) ((hanh vinh) OR (hanh tinh)) cuu tre*".