Perhaps you should try some spelling variations:
vien cua » viec cua, dien cua, tien cua
thu sac » thu sach, thu san, thu xac
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
suc van » su van, luc van, sac van
duc van » duc va, duc tan, duc manh
sac ky » cac ky, sai ky
va dao » ca dao
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: thu sac ky ((nang xa) or (nang x)) hoi. hieu va dao ((suc van) OR (duc van)) nhan vien cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky ((nang xa) OR (nang x)) hoi. hieu va dao ((suc van) OR (duc van)) nhan vien cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky ((nang xa) or (nang x)) hoi. hieu va dao ((suc van) OR (duc van)) nhan vien cua te".
• Adding a wildcard symbol may retrieve word variants: thu sac ky ((nang xa) or (nang x)) hoi. hieu va dao ((suc van) OR (duc van)) nhan vien cua te*.