Perhaps you should try some spelling variations:
hanh doi » thanh doi, hanh noi, hang doi
doi cua » dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
sach ty » sach tu, sach thu, xach tay
ke cau » ket cau
luc va » duc va, tuc va, loc va
cua te » cua tu
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

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 ty) OR (sach y)) nang x hoi. hieu ((ve cac) or (ke cau)) luc va hanh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach y)) nang x hoi. hieu ((ve cac) OR (ke cau)) luc va hanh doi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach y)) nang x hoi. hieu ((ve cac) or (ke cau)) luc va hanh doi cua te".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach y)) nang x hoi. hieu ((ve cac) or (ke cau)) luc va hanh doi cua te*.