Perhaps you should try some spelling variations:
xa khanh » xa thanh, van khanh, dat khanh
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
lai cua » dai cua, lai chau, thai cua
hai cua » thai cua, dai cua, hoi cua
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
ve cam » ve cham, ve cac, va cam

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