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, tu cach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
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) OR (te sach)) ky nang xa 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) OR (te sach)) ky nang xa hoi. hieu va cam thuc va gianh lai chau tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ky nang xa hoi. hieu va cam thuc va gianh lai chau tre*.