Perhaps you should try some spelling variations:
sinh ky » sinh ly, sinh y, kinh ky
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
ky lang » ky nang, ky dang, ky tang
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ve cau » ke cau, va cau, ve cac
vit ca » viet ca, viet cau
vi ca » li ca, va ca, vi ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh ky lang xa hoi. hieu ve cau truc ((va danh) or (va dinh)) ((vi ca) OR (vit ca)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh ky lang xa hoi. hieu ve cau truc ((va danh) OR (va dinh)) ((vi ca) OR (vit ca)) tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh ky lang xa hoi. hieu ve cau truc ((va danh) or (va dinh)) ((vi ca) OR (vit ca)) tren".
• Adding a wildcard symbol may retrieve word variants: hoc sinh ky lang xa hoi. hieu ve cau truc ((va danh) or (va dinh)) ((vi ca) OR (vit ca)) tren*.