Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh ky » hanh kem
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
su sach » so sach, vu sach
vu nang » vuc nang, va nang, vu dang
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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