Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
tu sach » thu sach, su sach, te sach
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
sach v » sach va, sach y, sach 2
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 v ((nang xa) OR (nang ma)) hoi. ((hieu ve) or (hieu va)) cau truc va hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v ((nang xa) OR (nang ma)) hoi. ((hieu ve) OR (hieu va)) cau truc va hanh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v ((nang xa) OR (nang ma)) hoi. ((hieu ve) or (hieu va)) cau truc va hanh lai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach v ((nang xa) OR (nang ma)) hoi. ((hieu ve) or (hieu va)) cau truc va hanh lai cua te*.