Perhaps you should try some spelling variations:
hieu ve » hieu va, hieu van
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
ve cham » va cham, ve chat, vu cham
tu sach » thu sach, te sach, tu cach
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa
soc va » hoc va, loc va, doc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ky sang ma hoi. hieu ve cham soc va hanh ((vi cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky sang ma hoi. hieu ve cham soc va hanh ((vi cua) OR (hai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky sang ma hoi. hieu ve cham soc va hanh ((vi cua) or (hai cua)) tre*.