Perhaps you should try some spelling variations:
thu sac » thu sach, thu san, thu xac
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
suc van » su van, luc van, sac van
duc van » duc va, duc tan, duc manh
sac ky » cac ky, sai ky
ve cao » va cao, ve bao, ve cac
de cua » le cua, te cua, dieu cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang xa hoi. hieu ve cao ((suc van) OR (duc van)) hanh ((de cua) OR (dai cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky nang xa hoi. hieu ve cao ((suc van) OR (duc van)) hanh ((de cua) or (dai cua)) te~".
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang xa hoi. hieu ve cao ((suc van) OR (duc van)) hanh ((de cua) or (dai cua)) te*.