Perhaps you should try some spelling variations:
hanh chat » hanh cat, hanh cham, thanh cham
san viet » gian viet, anh viet
va viet » hoa viet, mai viet, dao viet
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
su sach » so sach, vu sach
xang ma » tang ma, sang ma, rang ma
nang ma » tang ma, sang ma, nang cao
qua cam » qua cham, qua cac, qua ca
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y ((xang ma) OR (nang ma)) hoi. hieu qua cam luc va hanh chat ((va viet) or (san viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((xang ma) OR (nang ma)) hoi. hieu qua cam luc va hanh chat ((va viet) OR (san viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((xang ma) OR (nang ma)) hoi. hieu qua cam luc va hanh chat ((va viet) or (san viet))".
• Adding a wildcard symbol may retrieve word variants: su sach y ((xang ma) OR (nang ma)) hoi. hieu qua cam luc va hanh chat ((va viet) or (san viet))*.