Perhaps you should try some spelling variations:
chieu chien » thien chien
hieu hien » bieu hien, dieu hien, dieu khien
bich ngoc » bich nga, dinh ngoc
ngoc ha » ngoc hai, ngoc hoa
danh vi » hanh vi, dinh vi, danh di
sach tu » sach thu, cach tu, sach uu
ha danh » han danh, hoa danh, ha anh
sach ty » sach y, sach thu, xach tay
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo ((sach ty) OR (sach tu)) nang x hoi. ((hieu hien) or (chieu chien)) bich ngoc ha danh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo ((sach ty) OR (sach tu)) nang x hoi. ((hieu hien) OR (chieu chien)) bich ngoc ha danh vi cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo ((sach ty) OR (sach tu)) nang x hoi. ((hieu hien) or (chieu chien)) bich ngoc ha danh vi cua tu*".