Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
va doanh » van doanh, vay doanh, va danh
cham tuc » nham thuc, tham thuc, cham soc
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
va nang » van nang, da nang, cam nang
cuc tre » duc tre, cua tre, cuu tre
v nang » vu nang, van nang, voi nang

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 ((v nang) or (va nang)) xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va doanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((v nang) OR (va nang)) xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va doanh tai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((v nang) or (va nang)) xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va doanh tai cuc tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((v nang) or (va nang)) xa hoi. hieu ve ((cham tuc) OR (pham thuc)) va doanh tai cuc tre*.