Perhaps you should try some spelling variations:
hieu dien » lieu dien, bieu dien, hieu hien
hanh vai » hanh vi, hanh va, hanh tai
anh nuoc » anh quoc, anh ngoc, anh buoc
dien anh » tieng anh, dien dan
ca viet » va viet, co viet, san viet
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
lang ha » long ha
nang xa » nang x, lang xa, nang ma

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 ky ((nang xa) or (lang ha)) hoi. hieu dien anh nuoc va hanh vai ((ca viet) OR (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (lang ha)) hoi. hieu dien anh nuoc va hanh vai ((ca viet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang xa) or (lang ha)) hoi. hieu dien anh nuoc va hanh vai ((ca viet) OR (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (lang ha)) hoi. hieu dien anh nuoc va hanh vai ((ca viet) OR (hoa viet))*.