Perhaps you should try some spelling variations:
cach thuc » anh thuc
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
cac thu » cac thoi
nano xa » nano va, nano bac, nano cau
luy van » duy van, luu van, ly van
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
co luy » co ly
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: ve ((tac tu) or (((cach thuc) OR (cac thu)))) nano xa hoi. lieu va co luy van hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ve ((tac tu) OR (((cach thuc) OR (cac thu)))) nano xa hoi. lieu va co luy van hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ve ((tac tu) or (((cach thuc) OR (cac thu)))) nano xa hoi. lieu va co luy van hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ve ((tac tu) or (((cach thuc) OR (cac thu)))) nano xa hoi. lieu va co luy van hanh vai cuu tre*.