Perhaps you should try some spelling variations:
hieu ve » hieu va, hieu van
duc van » duc va, duc tan, duc manh
luc van » luoc van, luu van, luc va
lai cua » hai cua, lai chau, thai cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. hieu ve cam ((duc van) or (luc van)) hanh ((lai cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang x hoi. hieu ve cam ((duc van) OR (luc van)) hanh ((lai cua) OR (dai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang x hoi. hieu ve cam ((duc van) or (luc van)) hanh ((lai cua) or (dai cua)) tre*.