Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
duoc va » duc va, duoc ma, duong va
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
vi cuu » vi luu, vinh cuu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ma hoi. ((hieu hien) OR (hieu ve)) ban ((duoc va) OR (nuoc va)) hanh vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang ma hoi. ((hieu hien) or (hieu ve)) ban ((duoc va) OR (nuoc va)) hanh vi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ma hoi. ((hieu hien) or (hieu ve)) ban ((duoc va) OR (nuoc va)) hanh vi cuu tre*.