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