Perhaps you should try some spelling variations:
hang thai » hoang thai, hang tai, hang hai
va triet » va thiet, va trien, ve triet
thai va » thai van
va hang » van hang, va nang, va lang
cam tuc » cam tu, nam thuc, dam thuc
vu sach » vu bach, su sach, vu khach
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
hieu va » lieu va, hieu qua
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((ty nang) OR (ty hang)) ma hoi. hieu va ((cam tuc) or (cam xuc)) va hang thai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ty nang) OR (ty hang)) ma hoi. hieu va ((cam tuc) OR (cam xuc)) va hang thai va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ty nang) OR (ty hang)) ma hoi. hieu va ((cam tuc) or (cam xuc)) va hang thai va triet*".