Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
luu truc » luu tru, cau truc, cuu thuc
su sach » so sach, vu sach
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
va cham » va chat, va tham
xac va » tac va, ac va, bac va
ve luu » ke luu, vi luu

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 lang) OR (ky dang)) xa hoi. hieu va cham ((xac va) or (duc va)) thanh ve luu truc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky lang) OR (ky dang)) xa hoi. hieu va cham ((xac va) OR (duc va)) thanh ve luu truc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky lang) OR (ky dang)) xa hoi. hieu va cham ((xac va) or (duc va)) thanh ve luu truc".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky lang) OR (ky dang)) xa hoi. hieu va cham ((xac va) or (duc va)) thanh ve luu truc*.