Perhaps you should try some spelling variations:
thuat cac » thuat cam, thuat cao, thuat cat
dua tren » dung tren
van hanh » van thanh, ban hanh, van anh
cham duc » pham duc, cham soc, pham duy
duc van » duc va, duc tan, duc manh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
lang ha » long ha
lang xa » dang xay, lang van
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat cac ky ((lang xa) or (lang ha)) hoi. hieu va cham duc van hanh vi ((dua tren) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat cac ky ((lang xa) OR (lang ha)) hoi. hieu va cham duc van hanh vi ((dua tren) OR (cua cu)).
• Adding a wildcard symbol may retrieve word variants: thuat cac ky ((lang xa) or (lang ha)) hoi. hieu va cham duc van hanh vi ((dua tren) or (cua cu))*.