Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hanh dai » hanh tai, hanh dao, vanh dai
sang mai » sang ma, sang tai, lang mai
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
ky sang » ky nang, ky dang, ky tang
cam tu » cam thu, dam tu, tam tu
nam tu » nam thu, nam thuc
dai ve » dap ve, dau ve, dai va

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 ky sang mai hoi. hieu va ((((cam tu) OR (nam tu))) or (cam xuc)) va hanh dai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang mai hoi. hieu va ((((cam tu) OR (nam tu))) OR (cam xuc)) va hanh dai ve triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky sang mai hoi. hieu va ((((cam tu) OR (nam tu))) or (cam xuc)) va hanh dai ve triet*".