Perhaps you should try some spelling variations:
dang xay » dang van
hanh tai » thanh tai, hang tai, hinh tai
su sach » so sach, vu sach
luc van » luoc van, luu van, duc van
han tai » hang tai, nhan tai, van tai
cao luc » bao luc, cao duc, cao suc
sach ky » sac ky, sach y, sach ty
va cao » va cac, va co, va dao
cua te » cua tu

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 ky ((dang xay) or (van xay)) hoi. lieu va cao luc van ((hanh tai) OR (han tai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((dang xay) OR (van xay)) hoi. lieu va cao luc van ((hanh tai) OR (han tai)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((dang xay) or (van xay)) hoi. lieu va cao luc van ((hanh tai) OR (han tai)) cua te*".