Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
cau tren » cu tren, dau tren, ca tren
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
te san » te ban, ke san, tu san
san ky » sang ky, van ky, dan ky
va cam » va cham, va cac, va cao
loc va » luc va
ve cau » ke cau, va cau, ve cac

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 xa hoi. hieu va cam ((loc va) OR (hoc va)) thanh ve cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ky tang xa hoi. hieu va cam ((loc va) OR (hoc va)) thanh ve cau tren".
• Adding a wildcard symbol may retrieve word variants: te san ky tang xa hoi. hieu va cam ((loc va) OR (hoc va)) thanh ve cau tren*.