Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
trinh vi » trinh va, trinh ve, trinh viet
va trinh » van trinh, va tinh, lap trinh
sang kyo » sang tao, dang ky, sang cho
sang ky » dang ky, tang ky, bang ky
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
cau loc » hau loc, cau hoc, cau luc
ban ky » van ky, dan ky
va cau » van cau, va cac, va dau
loc va » hoc va, luc va
vi cau » ve cau, di cau, viet cau

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

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