Perhaps you should try some spelling variations:
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
sach ky » sac ky, sach y, sach ty
luc va » duc va, tuc va, loc va
ve cac » va cac, vien cac
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua

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 ((nang ma) or (mang may)) hoa. hieu ((ve cac) or (va cam)) luc va tinh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang ma) OR (mang may)) hoa. hieu ((ve cac) OR (va cam)) luc va tinh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang ma) or (mang may)) hoa. hieu ((ve cac) or (va cam)) luc va tinh vi cua vat*.