Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hanh doi » thanh doi, hanh noi, hang doi
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
luc van » luoc van, luu van, duc van
doi cua » dai cua, hoi cua
ve cac » va cac, vien cac
ke cau » ket cau
cua te » cua tu
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 nang x hoi. hieu ((ve cac) or (ke cau)) luc van hanh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. hieu ((ve cac) OR (ke cau)) luc van hanh doi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. hieu ((ve cac) or (ke cau)) luc van hanh doi cua te*.