Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
hanh doi » thanh doi, hanh noi, hang doi
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
doi cua » dai cua, hoi cua, dong cua
cua tre » cua te, cuu tre, cua triet

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 ((nang xa) or (sang ma)) hoi. hieu ve cham duc va hanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty ((nang xa) OR (sang ma)) hoi. hieu ve cham duc va hanh doi cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((nang xa) or (sang ma)) hoi. hieu ve cham duc va hanh doi cua tre*.