Perhaps you should try some spelling variations:
thuat sach » thuat lanh
thuat san » thuat toan, thuat song, thuat lanh
danh vai » danh sai, doanh van, dang van
hieu van » hieu va, thien van, lieu va
danh va » doanh va, hanh va, anh va
van cam » van nam, van lam, van cau
nano xa » nano va, nano bac, nano cau
ty nano » tu nano, day nano, tao nano
xuc va » duc va, tuc va, luc va
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: ((thuat sach) or (thuat san)) ty nano xa hoi. hieu van cam xuc va ((danh vai) OR (danh va)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat san)) ty nano xa hoi. hieu van cam xuc va ((danh vai) OR (danh va)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (thuat san)) ty nano xa hoi. hieu van cam xuc va ((danh vai) OR (danh va)) cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (thuat san)) ty nano xa hoi. hieu van cam xuc va ((danh vai) OR (danh va)) cua te*.