Perhaps you should try some spelling variations:
cau thuc » cau truc, cuu thuc, can thuc
vat nhan » van nhan, hat nhan, sat nhan
nhan tai » hang tai, van tai, toan tai
cau tren » cu tren, ca tren, cau treo
dau tren » dau tien, dat tren, dau tieng
nang xa » nang x, lang xa, nang ma
qua cau » quan cau, qua cac, qua ca
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang xa hoi. hieu qua cau thuc vat nhan tai ((cau tren) OR (dau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. hieu qua cau thuc vat nhan tai ((cau tren) OR (dau tren))".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu qua cau thuc vat nhan tai ((cau tren) OR (dau tren))*.