Perhaps you should try some spelling variations:
lang hoa » hang hoa, lang ha, nang hoa
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
su tien » su kien, tu tieng, dau tien
hanh va » hang va, hanh vi
su hien » su kien, thu hien, nhu hien
thu vat » thuc vat, thuat vat, thu nhat
hieu ve » hieu va, hieu van
hoa doi » hoa dai, hoc doi, xoa doi
ky lang » ky nang, ky dang, ky tang
ve nam » he nam, va nam, le nam
thu va » thuc va, thue va, tu va

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 lang hoa doi. hieu ve nam ((thu vat) OR (thu va)) hanh va ((su tien) or (su hien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang hoa doi. hieu ve nam ((thu vat) OR (thu va)) hanh va ((su tien) OR (su hien))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky lang hoa doi. hieu ve nam ((thu vat) OR (thu va)) hanh va ((su tien) or (su hien))*".