Perhaps you should try some spelling variations:
hanh doi » thanh doi, hanh noi, hang doi
vien cam » vien cac, vien nam, vien can
van hanh » van thanh, ban hanh, van anh
vien cao » vien cac, vien dai, vien da
te sach » toc sach
xuc van » duc van, luc van, vuc van
doi cua » dai cua, hoi cua
lang xa » lang ha, dang xay, lang van
sach lo » sach dao, sach doi, sach hoi
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach lo ((nang x) or (lang xa)) hoi. hieu ((vien cam) OR (vien cao)) xuc van hanh doi cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach lo ((nang x) OR (lang xa)) hoi. hieu ((vien cam) OR (vien cao)) xuc van hanh doi cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach lo ((nang x) or (lang xa)) hoi. hieu ((vien cam) OR (vien cao)) xuc van hanh doi cua cu".
• Adding a wildcard symbol may retrieve word variants: te sach lo ((nang x) or (lang xa)) hoi. hieu ((vien cam) OR (vien cao)) xuc van hanh doi cua cu*.