Perhaps you should try some spelling variations:
tuan sang » tuan bang, tuan dang, xuan sang
sang cua » mang cua, song cua, hang cua
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
luc van » luoc van, luu van, duc van
xuc van » duc van, vuc van, xuc ban
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet

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) or (tu cac)) ky dang xay hoi. hieu vu cham ((xuc van) OR (luc van)) tuan sang cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (tu cac)) ky dang xay hoi. hieu vu cham ((xuc van) OR (luc van)) tuan sang cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (tu cac)) ky dang xay hoi. hieu vu cham ((xuc van) OR (luc van)) tuan sang cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (tu cac)) ky dang xay hoi. hieu vu cham ((xuc van) OR (luc van)) tuan sang cua tre*.