Perhaps you should try some spelling variations:
hanh cham » thanh cham, thanh pham, khanh pham
cham cua » chat cua, cham cuu, ham cua
va hanh » van hanh, va thanh, va danh
sach ty » sach tu, sach thu, xach tay
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
va cam » va cham, va cao, va cai
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ty) OR (sach y)) nang ma hoi. hieu ((va cam) or (va cac)) luc va hanh cham cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ty) OR (sach y)) nang ma hoi. hieu ((va cam) OR (va cac)) luc va hanh cham cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ty) OR (sach y)) nang ma hoi. hieu ((va cam) or (va cac)) luc va hanh cham cua vat".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ty) OR (sach y)) nang ma hoi. hieu ((va cam) or (va cac)) luc va hanh cham cua vat*.