Perhaps you should try some spelling variations:
thuat van » thuat san, thuat va, thuat ban
dang loai » dang hoai, dang loi, dung loai
dan loai » phan loai, nhan loai, dang hoai
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
va cau » van cau, va cac, va dau
van ty » van ky, van tu, van te
luc va » tuc va, loc va

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

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