Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
cua cuu » cua chu, cua cau, cua cu
truc va » thuc va, thuc vat, trung va
va cham » va chat, va tham
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sac ky » cac ky
va dan » ca dan, va dao, va dau
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (sai ky)) nang xa hoi. hieu va cham truc va dan ((cua cuu) or (ca cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) nang xa hoi. hieu va cham truc va dan ((cua cuu) OR (ca cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sai ky)) nang xa hoi. hieu va cham truc va dan ((cua cuu) or (ca cua)) tre*.