Perhaps you should try some spelling variations:
thuat tao » thuat bao, thuat toan, thuat giao
dua tren » dung tren
hanh tai » thanh tai, hang tai, han tai
va hanh » van hanh, va thanh, va danh
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
cao suc » cao su, cao duc
va cao » va cac, va co, va dao
suc va » duc va, tuc va, luc va
tao ky » thao ky, cao ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat tao ky ((nang xa) or (nang x)) hoi. hieu va cao suc va hanh tai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat tao ky ((nang xa) OR (nang x)) hoi. hieu va cao suc va hanh tai ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thuat tao ky ((nang xa) or (nang x)) hoi. hieu va cao suc va hanh tai ((dua tren) or (cua te))*.