Perhaps you should try some spelling variations:
dang xay » dang van, van xay
vat hanh » vat thanh, van hanh, va hanh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu he » hieu ve, hiem he, hieu le
cuu tre » cua tre, cau tren, cau treo
tu sac » tu cac, tu san, tu bac
vi cuu » vi luu, vinh cuu
he am » he nam, ve am
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu sach)) ky ((nang xa) or (dang xay)) hoi. hieu he am thuc vat hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky ((nang xa) OR (dang xay)) hoi. hieu he am thuc vat hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu sach)) ky ((nang xa) or (dang xay)) hoi. hieu he am thuc vat hanh vi cuu tre*.