Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
sach thu » sach thue, sach thieu, sach tham
van hanh » van thanh, ban hanh, van anh
cam loc » cam lo
lai cua » dai cua, hai cua, lai chau
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
loc van » luoc van, hoc van, lo van
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: tu ((sach ky) or (sach thu)) lang xa hoi. ((hieu ve) OR (hieu va)) cam loc van hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach thu)) lang xa hoi. ((hieu ve) OR (hieu va)) cam loc van hanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sach thu)) lang xa hoi. ((hieu ve) OR (hieu va)) cam loc van hanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach thu)) lang xa hoi. ((hieu ve) OR (hieu va)) cam loc van hanh lai cua te*.