Perhaps you should try some spelling variations:
cach thuc » anh thuc
hieu vien » hieu hien, hieu viec, lieu vien
thang va » trang va, thong va, than va
duc van » duc va, duc tan, duc manh
vien da » vien dai, hien dai
lang xa » lang ha, dang xay, lang van
cac thu » cac thoi
cua tuc » cua duc, cua tu, cua thuoc
da duc » dao duc, da duoc, do duc

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 duc van ((thang va) or (hang va)) cua tuc~.
• 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 duc van ((thang va) OR (hang va)) cua tuc.
• Adding a wildcard symbol may retrieve word variants: thu ((cach thuc) or (cac thu)) lang xa hoi. hieu vien da duc van ((thang va) or (hang va)) cua tuc*.