Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
hieu phan » phieu phan, lieu phan, hieu pham
dau nuoc » dat nuoc, dau ngoc, cap nuoc
phan dau » phan tu, hang dau
duy sang » duy van, duy can, duy anh
danh di » danh du, xanh di, danh dien
y sang » _ sang
dan li » ban li, han li, pan li
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat lanh ((y sang) OR (duy sang)) ma hoa. hieu phan dau nuoc va ((dan li) or (danh di)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh ((y sang) OR (duy sang)) ma hoa. hieu phan dau nuoc va ((dan li) OR (danh di)) cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat lanh ((y sang) OR (duy sang)) ma hoa. hieu phan dau nuoc va ((dan li) or (danh di)) cua tu".
• Adding a wildcard symbol may retrieve word variants: thuat lanh ((y sang) OR (duy sang)) ma hoa. hieu phan dau nuoc va ((dan li) or (danh di)) cua tu*.