Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
mang xa » lang xa, mang may, dang xay
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
danh va » doanh va, hanh va, dan va
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
anh va » hanh 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 sach y ((mang xa) or (nang x)) hoi. hieu va cac tuc va ((danh va) or (anh va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y ((mang xa) OR (nang x)) hoi. hieu va cac tuc va ((danh va) OR (anh va)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach y ((mang xa) or (nang x)) hoi. hieu va cac tuc va ((danh va) or (anh va)) cuu tre*.