Perhaps you should try some spelling variations:
hieu cua » hieu qua, dieu cua, bieu cua
cua luat » quy luat
tinh doi » trinh doc, trinh do, tinh hoc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
thuc va » thuc vat, thuc dan, thuc day
doi cuu » doi cua, doi cuoc
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » truc va, tuc xa, duc va

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 ky nang ma hoi. hieu cua luat ((tuc va) OR (thuc va)) tinh doi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. hieu cua luat ((tuc va) OR (thuc va)) tinh doi cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu cua luat ((tuc va) OR (thuc va)) tinh doi cuu tre*.