Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
ve triet » va trien, su triet
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
sac ky » sai ky
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sac ky) or (cac ky)) nang mai hoi. hieu va cam xuc va hanh vi ((cua te) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sac ky) OR (cac ky)) nang mai hoi. hieu va cam xuc va hanh vi ((cua te) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: toc ((sac ky) or (cac ky)) nang mai hoi. hieu va cam xuc va hanh vi ((cua te) or (ve triet))*.