Perhaps you should try some spelling variations:
thuat nang » thuat bang, thuat mang, thuat trang
thue nang » thien nang, thi nang, chuc nang
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
xuc van » duc van, luc van, vuc van
ve cac » vien cac
vi cua » vai cua, di cua
cua cu » cua chu, cua cau, cua su

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 ((thue nang) OR (thuat nang)) xa hoi. hieu ((ve cac) or (va cac)) xuc van hanh vi cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thue nang) OR (thuat nang)) xa hoi. hieu ((ve cac) OR (va cac)) xuc van hanh vi cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thue nang) OR (thuat nang)) xa hoi. hieu ((ve cac) or (va cac)) xuc van hanh vi cua cu".
• Adding a wildcard symbol may retrieve word variants: te sach ((thue nang) OR (thuat nang)) xa hoi. hieu ((ve cac) or (va cac)) xuc van hanh vi cua cu*.