Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dau tien » van tien
van tinh » van thinh, van minh, ban tinh
tinh va » tich va, trinh van, trinh vat
cua van » cua ban, cua vat, cua dan
sach ky » sac ky, sach y, sach kem
lang ha » long ha
sach ty » sach y, sach tu, sach thu
ca tren » cau tren, cu tren, la tren
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) OR (sach ty)) lang ha hoi. hieu van nam cua van tinh va ((dau tien) or (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach ty)) lang ha hoi. hieu van nam cua van tinh va ((dau tien) OR (ca tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sach ty)) lang ha hoi. hieu van nam cua van tinh va ((dau tien) or (ca tren))".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sach ty)) lang ha hoi. hieu van nam cua van tinh va ((dau tien) or (ca tren))*.