Perhaps you should try some spelling variations:
hanh van » thanh van, khanh van, hanh va
than tai » thanh tai, toan tai, nhan tai
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
han tai » hang tai, nhan tai, van tai
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
thiet » thieu

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 y nang ma hoi. hieu ve cam xuc va ((hanh van) or (((han tai) or (than tai)))) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. hieu ve cam xuc va ((hanh van) OR (((han tai) OR (than tai)))) va thiet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. hieu ve cam xuc va ((hanh van) or (((han tai) or (than tai)))) va thiet*.