Perhaps you should try some spelling variations:
dang xay » dang van, van xay
xay hoi » xa hoi, tay hoi, cay phoi
thi van » thi lan, thi hanh, thi nang
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
sach o » sach lo, sac o, mach o
di cua » dai cua, doi cua, de cua

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 o) OR (sach y)) dang xay hoi. thi van nam ((xuc van) or (duc van)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach o) OR (sach y)) dang xay hoi. thi van nam ((xuc van) OR (duc van)) hanh di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach o) OR (sach y)) dang xay hoi. thi van nam ((xuc van) or (duc van)) hanh di cua tre*".