Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
nang mai » nang ma, nang tai, lang mai
sach ly » sach lo, sach ty, sach hay
hanh di » hanh vi, hanh de, hang di
xuc van » duc van, luc van, vuc van
cua duc » cua tuc, cua nuoc, cua quoc
mai hoi » mai khoi, dai hoi, lai hoi
va cao » va cac, va co, va bao
va dao » ca dao
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: tu ((sach ly) OR (sach y)) nang mai hoi. lieu ((va cao) or (va dao)) xuc van hanh di cua duc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach y)) nang mai hoi. lieu ((va cao) OR (va dao)) xuc van hanh di cua duc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ly) OR (sach y)) nang mai hoi. lieu ((va cao) or (va dao)) xuc van hanh di cua duc".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) OR (sach y)) nang mai hoi. lieu ((va cao) or (va dao)) xuc van hanh di cua duc*.