Perhaps you should try some spelling variations:
gianh lai » gian lan
cam thuc » am thuc, nam thuc, cam thu
va gianh » va gian, van giang, va giai
chau tre » chay tren, chau tho, cho tre
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va cam » va cham, va cac, va cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((nang xa) OR (nang x)) hoi. hieu va cam thuc va gianh lai chau tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang xa) OR (nang x)) hoi. hieu va cam thuc va gianh lai chau tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) OR (nang x)) hoi. hieu va cam thuc va gianh lai chau tre*.