Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
tang mai » tang ma, tang tai, sang mai
lang mai » lang dai, lang hai, lang man
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
cac luc » cau luc, coc luc, cac nuoc
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thuat toan)) kho ((tang mai) OR (lang mai)) hoi. hieu ve cac luc va hanh dai cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (thuat toan)) kho ((tang mai) OR (lang mai)) hoi. hieu ve cac luc va hanh dai cua tu~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thuat toan)) kho ((tang mai) OR (lang mai)) hoi. hieu ve cac luc va hanh dai cua tu*.