Perhaps you should try some spelling variations:
hoc hanh » hoc nhanh, hoc thanh, thuc hanh
va triet » va trien, ve triet, cua triet
tinh hai » tinh thai, tinh chat, trinh han
nang van » dang van, tang van, lang van
cac dac » cac dan, cac dai, cac bac
va tinh » may tinh
hieu va » lieu va, hieu qua
van hoi » van hoa, van hoc, van hoe
hoc anh » hoc nganh, hoc nhanh, ngoc anh
dac va » duc va, day va, dat 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: ((hoc hanh) or (hoc anh)) ky nang van hoi. hieu va cac dac va tinh hai ((va triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hanh) OR (hoc anh)) ky nang van hoi. hieu va cac dac va tinh hai ((va triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: ((hoc hanh) or (hoc anh)) ky nang van hoi. hieu va cac dac va tinh hai ((va triet) or (va thiet))*.