Perhaps you should try some spelling variations:
giao hanh » giao thanh, gia hanh, gian thanh
cau treo » cau theo, cau tren, cau triet
thu nang » thi nang, thu bang, tho nang
duc giao » duc gia, dung giao, nuoc giao
thu hang » thi hang, thuc hanh, thu huong
cac duc » cac du, cao duc, cac dac
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
ki nang » ky nang
ve cac » va cac, vien cac
vi cau » va cau, ve cau, di cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((((thu nang) OR (thu hang))) or (ki nang)) xa hoi. hieu ve cac duc giao hanh vi cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((((thu nang) OR (thu hang))) OR (ki nang)) xa hoi. hieu ve cac duc giao hanh vi cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((((thu nang) OR (thu hang))) or (ki nang)) xa hoi. hieu ve cac duc giao hanh vi cau treo".
• Adding a wildcard symbol may retrieve word variants: su sach ((((thu nang) OR (thu hang))) or (ki nang)) xa hoi. hieu ve cac duc giao hanh vi cau treo*.