Perhaps you should try some spelling variations:
tinh vien » sinh vien, tinh dien, tinh viet
vien sau » vien dai, vien da, nien su
sau tren » dau tren, cau tren, sau truyen
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang
ky danh » ky anh
hieu va » lieu va, hieu qua
cac loc » cac lop, cac toc, cac hoc
va tinh » may tinh
te san » te ban, ke san, tu san
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ((ky tang) or (((ky dang) OR (ky danh)))) xa hoi. hieu va cac loc va tinh vien sau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ((ky tang) OR (((ky dang) OR (ky danh)))) xa hoi. hieu va cac loc va tinh vien sau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ((ky tang) or (((ky dang) OR (ky danh)))) xa hoi. hieu va cac loc va tinh vien sau tren".
• Adding a wildcard symbol may retrieve word variants: te san ((ky tang) or (((ky dang) OR (ky danh)))) xa hoi. hieu va cac loc va tinh vien sau tren*.