Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
tang hanh » tang thanh, dang hanh, nang hanh
viec cac » vien cac, viec cua, viec lam
tuc tang » thuc trang, duc thang, duc tan
vai cua » hai cua, lai cua, bai cua
cac tuc » cac toc, cac tu, cac tac
toc sai » toc san, toc dai, thuoc sai
long ha » dong ha, cong ha, dong hoa
dang ha » dong ha, dung ha, lang ha
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sai ky ((dang ha) or (long ha)) hoi. hieu viec cac tuc tang hanh ((vai cua) OR (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sai ky ((dang ha) OR (long ha)) hoi. hieu viec cac tuc tang hanh ((vai cua) OR (dai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sai ky ((dang ha) or (long ha)) hoi. hieu viec cac tuc tang hanh ((vai cua) OR (dai cua)) te".
• Adding a wildcard symbol may retrieve word variants: toc sai ky ((dang ha) or (long ha)) hoi. hieu viec cac tuc tang hanh ((vai cua) OR (dai cua)) te*.