Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
cau vuc » cau truc, cau phuc
cau luc » cau truc, cau phuc
van van » tan van, san van, van vat
cua tuc » cua duc, cua tu, cua thuoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty nang xa hoi. lieu va ((cau vuc) or (cau luc)) ((van van) OR (van ban)) tri cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. lieu va ((cau vuc) OR (cau luc)) ((van van) OR (van ban)) tri cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. lieu va ((cau vuc) or (cau luc)) ((van van) OR (van ban)) tri cua tuc".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. lieu va ((cau vuc) or (cau luc)) ((van van) OR (van ban)) tri cua tuc*.