Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
lang ha » long ha
lang xa » dang xay, lang van
ve cam » ve cham, ve cac, va cam
va va » va van, va vua, va vai

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 ty ((nang x) or (((lang xa) OR (lang ha)))) hoi. hieu ve cam xuc van hanh va va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang x) OR (((lang xa) OR (lang ha)))) hoi. hieu ve cam xuc van hanh va va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang x) or (((lang xa) OR (lang ha)))) hoi. hieu ve cam xuc van hanh va va triet*".