Perhaps you should try some spelling variations:
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
va tinh » may tinh
voi cua » hoi cua, moi cua, coi cua
doi cua » dai cua, hoi cua, dong cua
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (su sach)) ky nang x hoi. hieu va cam xuc va tinh ((voi cua) OR (doi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (su sach)) ky nang x hoi. hieu va cam xuc va tinh ((voi cua) OR (doi cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (su sach)) ky nang x hoi. hieu va cam xuc va tinh ((voi cua) OR (doi cua)) tre*".