Perhaps you should try some spelling variations:
thuat hanh » thuat thanh, thuat lanh, thuat hinh
hanh theo » anh tho
cham duc » pham duc, cham soc, pham duy
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi lua » vi luu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat hanh theo ((nang xa) or (lang xa)) hoi. hieu ve cham duc va dan vi lua (tru or truc)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat hanh theo ((nang xa) OR (lang xa)) hoi. hieu ve cham duc va dan vi lua (tru OR truc).
• Adding a wildcard symbol may retrieve word variants: thuat hanh theo ((nang xa) or (lang xa)) hoi. hieu ve cham duc va dan vi lua (tru or truc)*.