Perhaps you should try some spelling variations:
khanh lai » khanh luan, thanh lap, thanh loi
cua viet » ca viet, hoa viet, cua vat
xa khanh » xa thanh, van khanh, dat khanh
lai cua » dai cua, hai cua, lai chau
su sach » so sach
nang ma » tang ma, sang ma, nang cao
vu sach » vu bach, vu khach
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
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) or (vu sach)) y nang ma hoa. hieu ((ve cam) OR (ve cac)) tuc xa khanh lai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang ma hoa. hieu ((ve cam) OR (ve cac)) tuc xa khanh lai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) y nang ma hoa. hieu ((ve cam) OR (ve cac)) tuc xa khanh lai cua viet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) y nang ma hoa. hieu ((ve cam) OR (ve cac)) tuc xa khanh lai cua viet*.