Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van, van xay
tu cach » tu cac
va danh » va dinh, va dan, va hanh
ve chao » ve chat, ve cham, ve cho
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
vi luu » vi lua
xu va » xu van, tu va, su va
tru » truc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thu sach)) ky dang xay hoi. hieu ve chao xu va danh ((di luu) OR (vi luu)) tru~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ky dang xay hoi. hieu ve chao xu va danh ((di luu) OR (vi luu)) tru.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thu sach)) ky dang xay hoi. hieu ve chao xu va danh ((di luu) OR (vi luu)) tru".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ky dang xay hoi. hieu ve chao xu va danh ((di luu) OR (vi luu)) tru*.