Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
sac kho » suc khoe, cac khoi, dac khoa
hieu va » lieu va, hieu qua
tang xa » trang xa, lang xa, tang ha
tang ma » mang may, tang van
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
te sac » te sach, te cac, te san
ve ve » va ve, ke ve, ve ke

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac kho ((tang xa) OR (tang ma)) hoi. hieu va cam tuc va hanh ((ve ve) or (de ve)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac kho ((tang xa) OR (tang ma)) hoi. hieu va cam tuc va hanh ((ve ve) OR (de ve)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac kho ((tang xa) OR (tang ma)) hoi. hieu va cam tuc va hanh ((ve ve) or (de ve)) triet".
• Adding a wildcard symbol may retrieve word variants: te sac kho ((tang xa) OR (tang ma)) hoi. hieu va cam tuc va hanh ((ve ve) or (de ve)) triet*.