Perhaps you should try some spelling variations:
nang xay » nganh xay, nang xuan, nang cao
thanh ha » thanh hoa, thanh hai, nhanh ha
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hanh va » hang va, hanh vi
ve chao » ve chat, ve cham, ve cho
hieu ve » hieu va, hieu van
luu tre » luu tru, cuu tre, luy tre
xu va » xu van, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((nang xay) or (dang xay)) hoi. hieu ve chao xu va ((thanh ha) or (hanh va)) luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xay) OR (dang xay)) hoi. hieu ve chao xu va ((thanh ha) OR (hanh va)) luu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xay) or (dang xay)) hoi. hieu ve chao xu va ((thanh ha) or (hanh va)) luu tre*.