Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
thanh va » thanh van, hanh va, thanh ha
ban toc » ban toi, ban thuoc, ban duoc
tu sach » thu sach, su sach, tu cach
te sach » toc sach
sang ma » tang ma, nang ma, sang tao
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
y sang » _ sang, duy sang
va cuu » va cau, va chu, va huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (te sach)) y sang ma hoi. hieu viec ((ban toc) or (dan toc)) gia thanh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) y sang ma hoi. hieu viec ((ban toc) OR (dan toc)) gia thanh va cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) y sang ma hoi. hieu viec ((ban toc) or (dan toc)) gia thanh va cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) y sang ma hoi. hieu viec ((ban toc) or (dan toc)) gia thanh va cuu tre*.