Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
vu sach » vu bach, su sach, vu khach
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cac lo » cac lop, cac co, cac ho
cac bo » bac bo, cac co
va cua » va chua, via cua, ca cua
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: vu sach ky ((nang xa) or (nang ma)) hoi. hieu hien ((cac lo) OR (cac bo)) va hanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((nang xa) OR (nang ma)) hoi. hieu hien ((cac lo) OR (cac bo)) va hanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky ((nang xa) or (nang ma)) hoi. hieu hien ((cac lo) OR (cac bo)) va hanh va cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((nang xa) or (nang ma)) hoi. hieu hien ((cac lo) OR (cac bo)) va hanh va cua te*.