Perhaps you should try some spelling variations:
thuat dan » thuat san, thuat ban, thuat dam
thanh vai » thanh hai, thanh van, thanh tai
dan loai » dang loai, phan loai, nhan loai
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
loai nam » hai nam
hieu ve » hieu va
cau duc » cao duc, cau luc, chu duc
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
x hoi » xa hoi, o hoi, x ho
nam x » nam _, nam a, nam b

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat dan loai nam x hoi. ((hieu ve) OR (hieu van)) cau duc va thanh vai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat dan loai nam x hoi. ((hieu ve) OR (hieu van)) cau duc va thanh vai ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat dan loai nam x hoi. ((hieu ve) OR (hieu van)) cau duc va thanh vai ((cua tre) or (cuu tre))*".