Perhaps you should try some spelling variations:
va thuat » ky thuat, ki thuat, va thuc
danh di » danh du, xanh di, danh dien
duoc va » duc va, duoc ma, duong va
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
y tang » ky tang, 6 tang, 5 tang
7 tang » 6 tang
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((y tang) OR (7 tang)) ma hoi. lieu va thuat ((duoc va) or (nuoc va)) danh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y tang) OR (7 tang)) ma hoi. lieu va thuat ((duoc va) OR (nuoc va)) danh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y tang) OR (7 tang)) ma hoi. lieu va thuat ((duoc va) or (nuoc va)) danh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((y tang) OR (7 tang)) ma hoi. lieu va thuat ((duoc va) or (nuoc va)) danh di cua tre*.