Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
hanh tai » thanh tai, hang tai, han tai
qua cham » qua hai, qua cac, va cham
hanh lai » hanh lam, thanh lap, thanh loi
lai hoa » dai hoa, loai hoc
tu dan » tuc dan, tu ban, cu dan
tuc va » thuc va, truc va, tuc xa
dan ky » van ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ky nang ((lai hoa) or (dai hoc)). hieu qua cham tuc va ((hanh lai) OR (hanh tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ky nang ((lai hoa) OR (dai hoc)). hieu qua cham tuc va ((hanh lai) OR (hanh tai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dan ky nang ((lai hoa) or (dai hoc)). hieu qua cham tuc va ((hanh lai) OR (hanh tai)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu dan ky nang ((lai hoa) or (dai hoc)). hieu qua cham tuc va ((hanh lai) OR (hanh tai)) cua te*.