Perhaps you should try some spelling variations:
sang tao » hang tai
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
cam vuc » cam xuc
hai cua » thai cua, dai cua, hoi cua
vai cua » dai cua, lai cua, bai cua
vuc van » duc van, luc van, thuc van
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
tao hoi » tao khoi, tao boi, tay hoi
ky sang » ky nang, ky dang, ky tang

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