Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
cac phuc » cau phuc, khac phuc, cac thu
dang xay » dang van, van xay
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
hanh de » hanh ve, hanh kem
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
de cua » le cua, te cua, dieu cua
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc va ky ((nang xa) or (dang xay)) hoi. hieu van ((cac phuc) or (cach thuc)) van hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc va ky ((nang xa) OR (dang xay)) hoi. hieu van ((cac phuc) OR (cach thuc)) van hanh de cua tre.
• Adding a wildcard symbol may retrieve word variants: nuoc va ky ((nang xa) or (dang xay)) hoi. hieu van ((cac phuc) or (cach thuc)) van hanh de cua tre*.