Perhaps you should try some spelling variations:
may thoi » gay thoi, may thi, tay thoi
hanh lam » thanh lap, hanh kem, hanh va
chat soc » cham soc, chat hoc, chat doc
lam cua » nam cua, lam chat
va hanh » van hanh, va thanh, va danh
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
sach ky » sac ky, sach ty, sach kem
may hoi » tay hoi, mai hoi, may hmi
soc va » hoc va, loc va, doc va
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: te ((sach ky) or (sach y)) mang ((may hoi) OR (may thoi)). hieu ve chat soc va hanh lam cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) mang ((may hoi) OR (may thoi)). hieu ve chat soc va hanh lam cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach y)) mang ((may hoi) OR (may thoi)). hieu ve chat soc va hanh lam cua te".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach y)) mang ((may hoi) OR (may thoi)). hieu ve chat soc va hanh lam cua te*.