Perhaps you should try some spelling variations:
cham cuu » cap cuu, chat cua
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien
ve triet » va trien
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham

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 ly nang xa hoi. hieu vu cham cuu van hanh vi ((su triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang xa hoi. hieu vu cham cuu van hanh vi ((su triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang xa hoi. hieu vu cham cuu van hanh vi ((su triet) or (ve triet))*.