Perhaps you should try some spelling variations:
va tuyen » va truyen, tac tuyen, ke tuyen
va trien » va truyen, va thiet, va tieng
van hanh » van thanh, ban hanh, van anh
hanh ve » hanh vi, hanh va, hanh kem
xuc van » duc van, luc van, vuc van
sach ky » sach y, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
qua cam » qua cham, qua cac, qua ca
sac ky » cac ky, sai ky

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) OR (sac ky)) lang xa hoi. hieu qua cam xuc van hanh ve ((va trien) or (va tuyen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) lang xa hoi. hieu qua cam xuc van hanh ve ((va trien) OR (va tuyen)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sac ky)) lang xa hoi. hieu qua cam xuc van hanh ve ((va trien) or (va tuyen))".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sac ky)) lang xa hoi. hieu qua cam xuc van hanh ve ((va trien) or (va tuyen))*.