Perhaps you should try some spelling variations:
hanh kien » danh kien, anh kien, thanh vien
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
vu sach » vu bach, su sach, vu khach
sach vu » sach va, sach tu, sach uu
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
kien su » nien su, tien su, vien sau
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach vu ((nang ma) OR (sang ma)) hoi. hieu va cam xuc van hanh kien su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach vu ((nang ma) OR (sang ma)) hoi. hieu va cam xuc van hanh kien su triet".
• Adding a wildcard symbol may retrieve word variants: vu sach vu ((nang ma) OR (sang ma)) hoi. hieu va cam xuc van hanh kien su triet*.