Perhaps you should try some spelling variations:
hinh thai » sinh thai, tinh thai, dinh thi
hanh thai » nhanh thai, hanh tai, anh thai
hieu van » hieu va, thien van, lieu va
cam duc » cam xuc, cao duc, pham duc
van cam » van nam, van lam, van cau
lang xa » lang ha, dang xay, lang van
sac ky » sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sac ky) or (cac ky)) lang xa hoi. hieu van cam duc va ((hanh thai) OR (hinh thai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sac ky) OR (cac ky)) lang xa hoi. hieu van cam duc va ((hanh thai) OR (hinh thai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sac ky) or (cac ky)) lang xa hoi. hieu van cam duc va ((hanh thai) OR (hinh thai)) cua te".
• Adding a wildcard symbol may retrieve word variants: thu ((sac ky) or (cac ky)) lang xa hoi. hieu van cam duc va ((hanh thai) OR (hinh thai)) cua te*.