Perhaps you should try some spelling variations:
ve triet » va trien
su triet » su viet, su tien
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, va cam, ve cai
ma hoi » mai hoi, xa hoi, ma hoa

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 nang ma hoi. hieu ((ve cam) OR (ve cac)) tuc va hanh va ((su triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ma hoi. hieu ((ve cam) OR (ve cac)) tuc va hanh va ((su triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ma hoi. hieu ((ve cam) OR (ve cac)) tuc va hanh va ((su triet) or (ve triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ma hoi. hieu ((ve cam) OR (ve cac)) tuc va hanh va ((su triet) or (ve triet))*.