Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
ve cham » va cham, ve chat, vu cham
hang di » hang doi, hang vi, hang dien
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
luc van » luoc van, luu van, duc van
sac ky » cac ky
ma hoi » mai hoi, xa hoi, ma hoa
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: te ((sac ky) OR (sai ky)) nang ma hoi. hieu ve cham luc van ((hanh vi) or (hang di)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sac ky) OR (sai ky)) nang ma hoi. hieu ve cham luc van ((hanh vi) OR (hang di)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sac ky) OR (sai ky)) nang ma hoi. hieu ve cham luc van ((hanh vi) or (hang di)) cua te".
• Adding a wildcard symbol may retrieve word variants: te ((sac ky) OR (sai ky)) nang ma hoi. hieu ve cham luc van ((hanh vi) or (hang di)) cua te*.