Perhaps you should try some spelling variations:
luyen tre » luyen tri, huyen tren, tuyen tren
cham cuu » cap cuu, chat cua
van hanh » van thanh, ban hanh, van anh
vi luyen » vi xuyen, va luyen, bai luyen
nang xa » nang x, lang xa, nang ma
tang ma » tang van
hieu va » lieu va, hieu qua
va cham » va chat, va tham
te cac » tu cac, ve cac, te cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ky ((nang xa) or (((tang ma) or (mang may)))) hoi. hieu va cham cuu van hanh vi luyen tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky ((nang xa) OR (((tang ma) OR (mang may)))) hoi. hieu va cham cuu van hanh vi luyen tre.
• Adding a wildcard symbol may retrieve word variants: te cac ky ((nang xa) or (((tang ma) or (mang may)))) hoi. hieu va cham cuu van hanh vi luyen tre*.