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 » nang x, lang xa, mang xa
va nhan » van nhan, ca nhan, va phan
nang ma » tang ma, sang ma, nang cao
ve bao » te bao, va bao
tuc va » thuc va, truc va, tuc xa
ve cao » va cao, ve cac, ve co
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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 ma)) hoi. hieu ((ve cao) OR (ve bao)) tuc va nhan vien cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky ((nang xa) OR (nang ma)) hoi. hieu ((ve cao) OR (ve bao)) tuc va nhan vien cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky ((nang xa) or (nang ma)) hoi. hieu ((ve cao) OR (ve bao)) tuc va nhan vien cua tu".
• Adding a wildcard symbol may retrieve word variants: thu sac ky ((nang xa) or (nang ma)) hoi. hieu ((ve cao) OR (ve bao)) tuc va nhan vien cua tu*.