Perhaps you should try some spelling variations:
cach thuc » anh thuc
nang doi » nang doc, nang noi, nang dong
hang doi » hang di, hang loi, huong doi
cuoc tre » cuoc tro, nuoc tren, duoc tren
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cac thu » cac thoi
thu va » thuc va, thue va, tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((cach tu) OR (cach thuc)) nang xa hoi. hieu va cac thu va ((nang doi) or (hang doi)) cuoc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((cach tu) OR (cach thuc)) nang xa hoi. hieu va cac thu va ((nang doi) OR (hang doi)) cuoc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((cach tu) OR (cach thuc)) nang xa hoi. hieu va cac thu va ((nang doi) or (hang doi)) cuoc tre".
• Adding a wildcard symbol may retrieve word variants: toc ((cach tu) OR (cach thuc)) nang xa hoi. hieu va cac thu va ((nang doi) or (hang doi)) cuoc tre*.