Perhaps you should try some spelling variations:
cach thuc » anh thuc
tan thanh » tran thanh, tang thanh, toan thanh
thanh va » thanh van, hanh va, thanh ha
cac thu » cac thoi
lang xa » lang ha, dang xay, lang van
vien da » vien dai
va cua » va chua, via cua, ca cua
cua tu » cua tuc, cua su, cua cu
hien » bien, tien, dien

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((cach thuc) or (cac thu)) lang xa hoi. hieu ((vien da) or (hien dai)) duc tan thanh va cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((cach thuc) OR (cac thu)) lang xa hoi. hieu ((vien da) OR (hien dai)) duc tan thanh va cua tu.
• Adding a wildcard symbol may retrieve word variants: thu ((cach thuc) or (cac thu)) lang xa hoi. hieu ((vien da) or (hien dai)) duc tan thanh va cua tu*.