Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
cao hoc » co hoc, cho hoc, chat hoc
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam loc » cam lo
va hanh » van hanh, va thanh, va danh
san ky » sang ky, van ky, dan ky
loc va » hoc va, luc va
vi qua » vi quan, vi lua, viet qua
va qua » va quan, va quy, va quang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ky nang cao hoc. ((hieu ve) or (hieu va)) cam loc va hanh ((vi qua) OR (va qua)) su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ky nang cao hoc. ((hieu ve) OR (hieu va)) cam loc va hanh ((vi qua) OR (va qua)) su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san ky nang cao hoc. ((hieu ve) or (hieu va)) cam loc va hanh ((vi qua) OR (va qua)) su".
• Adding a wildcard symbol may retrieve word variants: thuat san ky nang cao hoc. ((hieu ve) or (hieu va)) cam loc va hanh ((vi qua) OR (va qua)) su*.