Perhaps you should try some spelling variations:
ve triet » va trien, su triet
van hanh » van thanh, ban hanh, van anh
sang tao » hang tai
luc van » luoc van, luu van, duc van
sach tu » sach thu, cach tu, sach ty
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
va cam » va cham, va cac, va cao
vi ve » va ve, gi ve, ve ve

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 tu ((nang xa) or (sang tao)) hoi. hieu ((ve cac) or (va cam)) luc van hanh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu ((nang xa) OR (sang tao)) hoi. hieu ((ve cac) OR (va cam)) luc van hanh vi ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach tu ((nang xa) or (sang tao)) hoi. hieu ((ve cac) or (va cam)) luc van hanh vi ve triet*.