Perhaps you should try some spelling variations:
cham cuu » cap cuu, chat cua
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va
cua tuc » cua duc, cua thuoc, luat tuc
cua tu » cua su, cua cu, cua te
x hoi » xa hoi, o hoi, x ho

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 ty nang x hoi. ((hieu va) or (hieu qua)) cham cuu van hanh tai ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. ((hieu va) OR (hieu qua)) cham cuu van hanh tai ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x hoi. ((hieu va) or (hieu qua)) cham cuu van hanh tai ((cua tu) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. ((hieu va) or (hieu qua)) cham cuu van hanh tai ((cua tu) OR (cua tuc))*.