Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
thi nang » thi cong, ki nang, thi hanh
hanh vai » hanh vi, hanh va, hanh tai
sach thi » sach thu, sach tai, sach thieu
te sach » toc sach
cua can » cua cac, cua ban, cua dan
cua cau » cua cac, cua cay, cua cu
vuc van » duc van, luc van, thuc van
cac vuc » cac nuoc, cac vung, cac cuoc
hieu ve » hieu va, hieu van
cua chu » sua chua
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 thi nang x hoi. hieu ve cac vuc van hanh vai ((((cua cau) OR (cua can))) or (cua chu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi nang x hoi. hieu ve cac vuc van hanh vai ((((cua cau) OR (cua can))) OR (cua chu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thi nang x hoi. hieu ve cac vuc van hanh vai ((((cua cau) OR (cua can))) or (cua chu))".
• Adding a wildcard symbol may retrieve word variants: te sach thi nang x hoi. hieu ve cac vuc van hanh vai ((((cua cau) OR (cua can))) or (cua chu))*.