Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
van hanh » van thanh, ban hanh, van anh
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
va cham » va chat, va tham
duc van » duc va, duc tan, duc manh
tu dan » tuc dan, tu ban, cu dan
di cua » doi cua, de cua, do cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ((ky lang) or (ky tang)) ha noi. lieu va cham duc van hanh ((di cua) OR (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ((ky lang) OR (ky tang)) ha noi. lieu va cham duc van hanh ((di cua) OR (dai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dan ((ky lang) or (ky tang)) ha noi. lieu va cham duc van hanh ((di cua) OR (dai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu dan ((ky lang) or (ky tang)) ha noi. lieu va cham duc van hanh ((di cua) OR (dai cua)) triet*.