Perhaps you should try some spelling variations:
dau trong » dat trong, dao trong, dai trong
van hanh » van thanh, ban hanh, van anh
dau tien » van tien
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
hanh va » hang va, hanh vi
ve cam » ve cham, ve cac, va cam

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) or (thuat toan)) ky nang xa hoi. hieu ve cam xuc van hanh va ((dau tien) or (dau trong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat toan)) ky nang xa hoi. hieu ve cam xuc van hanh va ((dau tien) OR (dau trong)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat toan)) ky nang xa hoi. hieu ve cam xuc van hanh va ((dau tien) or (dau trong))*.