Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
luoc can » luc canh, hoc can, luoc dai
dang xay » dang van, van xay
luc van » luoc van, luu van, duc van
sach ky » sac ky, sach y, sach kem
xay hoi » xa hoi, tay hoi, cay phoi
sach ty » sach y, sach tu, sach thu
va cao » va cac, va co, va dao
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ky) OR (sach ty)) dang xay hoi. lieu va cao ((luc van) or (luoc can)) hanh tri cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sach ty)) dang xay hoi. lieu va cao ((luc van) OR (luoc can)) hanh tri cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sach ty)) dang xay hoi. lieu va cao ((luc van) or (luoc can)) hanh tri cua tu*".