Perhaps you should try some spelling variations:
tan doanh » toan doanh, van doanh, san doanh
cham duc » pham duc, cham soc, pham duy
lang xa » dang xay, lang van
lang ha » long ha
hieu va » lieu va, hieu qua
va cham » va chat, va tham
buu tre » cuu tre
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 ((lang xa) or (lang ha)) hoi. hieu va cham duc tan doanh tai buu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky ((lang xa) OR (lang ha)) hoi. hieu va cham duc tan doanh tai buu tre.
• Adding a wildcard symbol may retrieve word variants: te cac ky ((lang xa) or (lang ha)) hoi. hieu va cham duc tan doanh tai buu tre*.