Perhaps you should try some spelling variations:
thien van » thi van
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
chau tho » chat thom, cau thi, phu tho
sach ty » sach tu, sach thu, xach tay
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van

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 ty) OR (sach y)) xang xa hoi. ((hieu ve) or (thien van)) cam xuc van hanh lai chau tho~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) xang xa hoi. ((hieu ve) OR (thien van)) cam xuc van hanh lai chau tho.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach y)) xang xa hoi. ((hieu ve) or (thien van)) cam xuc van hanh lai chau tho".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach y)) xang xa hoi. ((hieu ve) or (thien van)) cam xuc van hanh lai chau tho*.