Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, mang xa, ang xa
nang ma » tang ma, sang ma, nang cao
cac duc » cac du, cao duc, cac dac
va hanh » van hanh, va thanh, va danh

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 ((((nang xa) OR (nang ma))) or (nang x)) hoi. lieu va cac duc va hanh lai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((((nang xa) OR (nang ma))) OR (nang x)) hoi. lieu va cac duc va hanh lai su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((((nang xa) OR (nang ma))) or (nang x)) hoi. lieu va cac duc va hanh lai su triet*".